Math
posted by Kelsey on .
Hi! Can you help me with this problem please? thank youu :D
The problem is:
The figure consists of a square with 4 half circles surrounding it. If the perimeter of the figure is 87 yards, what is the radius of each half circle? What is the area of the square? Round to the nearest tenth if necessary.

The perimeter of the figure is 4 half circles, or 2 complete circles.
A full circle has a perimeter of 2πr.
So we have
4πr=87 yds
Solve for r and hence the area of the square.