The circumference of a circle = \(\pi d\) or \(2\pi r\). Look at the sector of the circle shown below. To calculate the length of the arc, we need to know what fraction of the circle is shown. To do ...

VO: Ambrose is an apprentice pizza maker at the world famous Grecian Pizza Parlour.He’s taking his new job very seriously. He’s even come in early today, before the pizza parlour is open. It looks ...

Here you get the CBSE Class 10 Mathematics chapter 9, Circles: NCERT Exemplar Problems and Solutions (Part-IIA). This part of the chapter includes solutions to Question Number 1 to 5 from Exercise 9.2 ...

Here you get the CBSE Class 10 Mathematics chapter 11, Areas Related to Circles: NCERT Exemplar Problems and Solutions (Part-IVC). Here you will get solutions to Q. No. 15-20 from exercise 11.4 of ...

This post is in partnership with History Today. The article below was originally published at History Today. In school we learn there are 360 degrees in a circle, but where did the 360 come from? When ...