Question

The area of a circle is 16 pi square feet. what is the radius

Answer 1

The formula for the area of a circle is pi*radius^2

16pi=pi*radius^2

Divide by pi

16=radius^2

Take the square root of both sides

Radius=4

Answer 2

The radius is 4 ft

Explanation:

The area of a circle is given by

A = pi r^2

16 pi = pi r^2

Divide each side by pi

16pi /pi = pi r^2/pi

16 = r^2

Take the square root of each side

sqrt(16) = sqrt(r^2)

4 =r