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 ...

“Why are there 360 degrees in a circle?” A regular reader recently asked me that question. My first response was to say “Because Miss Helland told me so.” Miss Helland was my high school teacher for ...

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 ...

We bring here the NCERT Exemplar Problems and Solutions for CBSE Class 10 Mathematics: chapter- Areas Related to Circles (Part-IVA). This part contais solutions to Q. No. 15-20 from exercise 11.4 of ...

case 1<BR>In 2D coordinate system the sum of the angles of all quadrants=360 degree= 2pi radian<BR>in (x,y) plane<BR>Case 2<BR>In 3D coordinate system (x,y,z) I took 3 possible ...

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 ...