Question

Marcy is making a hooked circle-shaped rug for her mother. The circumference of the circle-shaped rug is 56.52 inches.

What is the area of the rug? (Use 3.14 for .)

Answer 1

So we want to find the radius of the circle. So just divide 56.52 by 3.14 and 2, which is 9. And then to find the area, just square 9 and multiply it by pi, which is 354.34 square inches.

The area of the rug is 354.34 square inches.

Answer 2

l/D=π⇒D=l/π=56,52/3,14=18(inch)
S=πD²/4=3,14*18²/4=254,34(inch²)