Published in



What Is The Area Of The Circle?

The triangle is equilateral. What’s the area of the circle?

Give this problem a try before jumping in for the solution!


By constructing an equilateral triangle from the centre as shown below, we know that the angle that subtends the arc is 120° thanks to the inscribed angle theorem.




We simplify science for you

Recommended from Medium

Why nothing exists

Square In A Quadrant

4 Proofs of Pythagorean Identity

What is Topology?

How I solved a cool probability problem

Algebra I: Difference of Squares

Schrödinger’s Equation: Explained

An Exam Question

Get the Medium app

A button that says 'Download on the App Store', and if clicked it will lead you to the iOS App store
A button that says 'Get it on, Google Play', and if clicked it will lead you to the Google Play store
Barry Leung 👑

Barry Leung 👑

19 | Math

More from Medium

What’s The Total Shaded Area?

How Many Positive Numbers Below 7 Million Contain The Digit 7 And Are Divisible By 7?

Fun Problem: Two unit squares have the same center. Show their intersection area is at least 3/4.

How To Intuitively Understand Euler’s Identity?

How To Intuitively Understand Euler’s Identity? —  [e^(iπ) + 1 = 0]. But why??