What is the area of the semi-circle

<img alt='' data-srcset='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=100&d=mm&r=g 2x' height='50' width='50' loading='lazy' data-src='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=50&d=mm&r=g' class='avatar avatar-50 photo lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' data-srcset='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=100&d=mm&r=g 2x' height='50' width='50' loading='lazy' data-src='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=50&d=mm&r=g' class='avatar avatar-50 photo lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' data-srcset='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=100&d=mm&r=g 2x' height='50' width='50' loading='lazy' data-src='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=50&d=mm&r=g' class='avatar avatar-50 photo lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' data-srcset='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=100&d=mm&r=g 2x' height='50' width='50' loading='lazy' data-src='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=50&d=mm&r=g' class='avatar avatar-50 photo lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' data-srcset='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=100&d=mm&r=g 2x' height='50' width='50' loading='lazy' data-src='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=50&d=mm&r=g' class='avatar avatar-50 photo lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' src='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=50&d=mm&r=g' srcset='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=100&d=mm&r=g 2x' class='avatar avatar-50 photo' height='50' width='50' loading='lazy'/>

BySuresh Chandra Thu, 24 Sep 20Wed, 20 Jan 21

Click here to see the solution

Suresh Chandra

Interesting Numbers

Jottings

Interesting Numbers

<img alt='' data-srcset='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=100&d=mm&r=g 2x' height='50' width='50' loading='lazy' data-src='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=50&d=mm&r=g' class='avatar avatar-50 photo lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' data-srcset='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=100&d=mm&r=g 2x' height='50' width='50' loading='lazy' data-src='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=50&d=mm&r=g' class='avatar avatar-50 photo lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' data-srcset='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=100&d=mm&r=g 2x' height='50' width='50' loading='lazy' data-src='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=50&d=mm&r=g' class='avatar avatar-50 photo lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' data-srcset='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=100&d=mm&r=g 2x' height='50' width='50' loading='lazy' data-src='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=50&d=mm&r=g' class='avatar avatar-50 photo lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' data-srcset='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=100&d=mm&r=g 2x' height='50' width='50' loading='lazy' data-src='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=50&d=mm&r=g' class='avatar avatar-50 photo lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' src='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=50&d=mm&r=g' srcset='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=100&d=mm&r=g 2x' class='avatar avatar-50 photo' height='50' width='50' loading='lazy'/>

BySuresh Chandra Sun, 18 Oct 20Wed, 20 Jan 21

Pi (𝝅) – Fun Facts

Tutorials

Pi (𝝅) – Fun Facts

<img alt='' data-srcset='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=100&d=mm&r=g 2x' height='50' width='50' loading='lazy' data-src='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=50&d=mm&r=g' class='avatar avatar-50 photo lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' data-srcset='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=100&d=mm&r=g 2x' height='50' width='50' loading='lazy' data-src='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=50&d=mm&r=g' class='avatar avatar-50 photo lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' data-srcset='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=100&d=mm&r=g 2x' height='50' width='50' loading='lazy' data-src='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=50&d=mm&r=g' class='avatar avatar-50 photo lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' data-srcset='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=100&d=mm&r=g 2x' height='50' width='50' loading='lazy' data-src='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=50&d=mm&r=g' class='avatar avatar-50 photo lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' data-srcset='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=100&d=mm&r=g 2x' height='50' width='50' loading='lazy' data-src='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=50&d=mm&r=g' class='avatar avatar-50 photo lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' src='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=50&d=mm&r=g' srcset='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=100&d=mm&r=g 2x' class='avatar avatar-50 photo' height='50' width='50' loading='lazy'/>

BySuresh Chandra Sat, 10 Oct 20Wed, 20 Jan 21

Pi (𝝅) is one of the most interesting numbers in mathematics. It is integral to our understanding of geometry, physics, astronomy, and mathematics. Pi (𝝅) is used in architecture and…

#1 – Geometry Basics

Tutorials

#1 – Geometry Basics

<img alt='' data-srcset='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=100&d=mm&r=g 2x' height='50' width='50' loading='lazy' data-src='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=50&d=mm&r=g' class='avatar avatar-50 photo lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' data-srcset='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=100&d=mm&r=g 2x' height='50' width='50' loading='lazy' data-src='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=50&d=mm&r=g' class='avatar avatar-50 photo lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' data-srcset='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=100&d=mm&r=g 2x' height='50' width='50' loading='lazy' data-src='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=50&d=mm&r=g' class='avatar avatar-50 photo lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' data-srcset='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=100&d=mm&r=g 2x' height='50' width='50' loading='lazy' data-src='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=50&d=mm&r=g' class='avatar avatar-50 photo lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' data-srcset='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=100&d=mm&r=g 2x' height='50' width='50' loading='lazy' data-src='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=50&d=mm&r=g' class='avatar avatar-50 photo lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' src='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=50&d=mm&r=g' srcset='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=100&d=mm&r=g 2x' class='avatar avatar-50 photo' height='50' width='50' loading='lazy'/>

BySuresh Chandra Thu, 22 Oct 20Wed, 20 Jan 21

When you start studying geometry, it is important to know and understand some basic concepts. This page will help you understand the concept of dimensions in geometry, and work out…

We are creating Illiterates in Maths?

Jottings

We are creating Illiterates in Maths?

<img alt='' data-srcset='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=100&d=mm&r=g 2x' height='50' width='50' loading='lazy' data-src='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=50&d=mm&r=g' class='avatar avatar-50 photo lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' data-srcset='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=100&d=mm&r=g 2x' height='50' width='50' loading='lazy' data-src='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=50&d=mm&r=g' class='avatar avatar-50 photo lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' data-srcset='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=100&d=mm&r=g 2x' height='50' width='50' loading='lazy' data-src='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=50&d=mm&r=g' class='avatar avatar-50 photo lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' data-srcset='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=100&d=mm&r=g 2x' height='50' width='50' loading='lazy' data-src='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=50&d=mm&r=g' class='avatar avatar-50 photo lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' data-srcset='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=100&d=mm&r=g 2x' height='50' width='50' loading='lazy' data-src='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=50&d=mm&r=g' class='avatar avatar-50 photo lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' src='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=50&d=mm&r=g' srcset='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=100&d=mm&r=g 2x' class='avatar avatar-50 photo' height='50' width='50' loading='lazy'/>

BySuresh Chandra Tue, 15 Dec 20Wed, 20 Jan 21

Mathematics is no more the manipulation of symbols than music is the manipulation of notes. You’ve likely seen the posts on Facebook or elsewhere. “Well, another day has passed and…

Arithmetic Resource Page

Tutorials

Arithmetic Resource Page

<img alt='' data-srcset='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=100&d=mm&r=g 2x' height='50' width='50' loading='lazy' data-src='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=50&d=mm&r=g' class='avatar avatar-50 photo lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' data-srcset='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=100&d=mm&r=g 2x' height='50' width='50' loading='lazy' data-src='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=50&d=mm&r=g' class='avatar avatar-50 photo lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' data-srcset='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=100&d=mm&r=g 2x' height='50' width='50' loading='lazy' data-src='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=50&d=mm&r=g' class='avatar avatar-50 photo lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' data-srcset='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=100&d=mm&r=g 2x' height='50' width='50' loading='lazy' data-src='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=50&d=mm&r=g' class='avatar avatar-50 photo lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' data-srcset='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=100&d=mm&r=g 2x' height='50' width='50' loading='lazy' data-src='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=50&d=mm&r=g' class='avatar avatar-50 photo lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' src='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=50&d=mm&r=g' srcset='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=100&d=mm&r=g 2x' class='avatar avatar-50 photo' height='50' width='50' loading='lazy'/>

BySuresh Chandra Tue, 13 Oct 20Wed, 20 Jan 21

These are some ideas and resources for primary school maths teachers and educators.

Cistercian numerals

Jottings

Cistercian numerals

<img alt='' data-srcset='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=100&d=mm&r=g 2x' height='50' width='50' loading='lazy' data-src='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=50&d=mm&r=g' class='avatar avatar-50 photo lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' data-srcset='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=100&d=mm&r=g 2x' height='50' width='50' loading='lazy' data-src='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=50&d=mm&r=g' class='avatar avatar-50 photo lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' data-srcset='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=100&d=mm&r=g 2x' height='50' width='50' loading='lazy' data-src='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=50&d=mm&r=g' class='avatar avatar-50 photo lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' data-srcset='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=100&d=mm&r=g 2x' height='50' width='50' loading='lazy' data-src='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=50&d=mm&r=g' class='avatar avatar-50 photo lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' data-srcset='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=100&d=mm&r=g 2x' height='50' width='50' loading='lazy' data-src='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=50&d=mm&r=g' class='avatar avatar-50 photo lazyload' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' /><noscript><img alt='' src='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=50&d=mm&r=g' srcset='https://secure.gravatar.com/avatar/d460beddd54cee695006330b29fb4fbd?s=100&d=mm&r=g 2x' class='avatar avatar-50 photo' height='50' width='50' loading='lazy'/>

BySuresh Chandra Tue, 9 Feb 21Tue, 9 Feb 21

The medieval Cistercian numerals, or “ciphers” in nineteenth-century parlance, were developed by the Cistercian monastic order (the Order of Cistercians are a Catholic religious order of monks and nuns that…