The area of a circular rug is 63.621 feet^2 . What is its diameter?

Question

Germany is hard.

Answer 1

Germany is pretty tough.

 

63.621 = (pi)(d/2)²

63.621/pi = d²/4

4(63.621)/pi = d² 

d = 2√(63.621/pi)

d = 9 ft

 

Answer 2

Area = (pi)r²

 

63.621=(pi)r²

 

r= 4.5 so d= 2r = 9