Question

The diameter of a sphere is 3 inches. Which equation can be used to find V, the volume of the sphere in cubic inches?
A. V= 4π(1.5)^3
B. V= 43π(1.5)^3
C. V= 4π(3)^2
D. V= 43π(3)^2

Answer 1

Use V = (4/3)πr^3 and r = 3/2 = 1.5. So V = (4/3)π(1.5)^3, which is option B. (This simplifies to 4.5π in^3.)