BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

Geometry - square trick

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Source: — Problem Solving |
User avatar
Community Manager
Posts: 1049
Joined: Sun Apr 06, 2008 5:15 pm
Location: Pittsburgh, PA
Thanked: 113 times
Followed by:27 members
GMAT Score:710

by dmateer25 » Sun Nov 30, 2008 6:46 pm
The area of the square is 16. So we know that each side of the square is 4.

Now, we need to find the length of the diagonal of the square.

The diagonal of the square will equal the diameter of the circle.

So diagonal of the square will be 4sqrt2 (the diagonal of a square is side of square x sqrt2).

The radius will be:

4sqrt2/2 = 2sqrt2

Area of the circle = 2sqrt2^2 (pi) = 8pi
Top
Post new topic Post Reply
• Page 1 of 1