Question

1.
A giant golf ball is being constructed for the final hole of a new mini-golf course. They used 38.7 cubic feet of material to create the figure. What is the radius of the giant golf ball? Use 3.14 for π.
The answer is rounded to the nearest tenth.

2.1 ft

38 ft

9.1 ft

114 ft

Answer 1

The correct answer is 2.1 ft.

To find the radius, we need to use the formula for the volume of a sphere:

V = (4/3)πr^3

We know that the volume is 38.7 cubic feet, so:

38.7 = (4/3)πr^3

Dividing both sides by (4/3)π:

r^3 = 38.7 / (4/3)π = 9.75

Taking the cube root:

r = 2.1 (rounded to the nearest tenth)