A beach ball has a diameter of 18 inches. What is the approximate volume of the beach ball?

17 cm²

100 cm²

150 cm²

200 cm²

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1. To solve this problem, you must aplpy the formula for calculate the volume of a sphere, which is:

V=4/3 (πr)

V is the volume of the sphere.

r is the radius of the sphere.

2. You must calculate the radiius. You have that the beach ball has a diameter of 18 inches, then:

r=diametert/2

r=18 inches/2

r=9 inches

3. When you substitute r = 9 inches into the formula, you obtain:

V=4/3 (πr)

V=3053.62 inches ³