Mary is making a pinata that has a ball-like shape. The pinata has a surface area of 50 square feet. Use the formula for the surface area of a sphere:

Question

to find the radius of the pinata. Round your answer to the nearest hundredth.

_____ feet

Answer 1

S = 4pi(r)^2

50 = 4(3.14)r^2

50 = 12.56r^2

sqrt(50/12.56) = r

r = 3.98

Answer 2

3.98 ft