Question

Calculate the radius of the circular rug. Use 3.14 for π.

area of rug: 153.86 feet

Answer 1

The best and correct answer is 7

Answer 2

7 ft

Explanation:

The area of a circle is given by

A = pi r^2

153.86 = 3.14 r^2

Divide each side by 3.14

153.86 / 3.14 = r^2

49 = r^2

Take the square root of each side

sqrt(49) = sqrt(r^2)

7 = r