1

Set 2: Area Volume (Advanced)

Explanation

Answer: A

PROBLEM

Recent studies show that a sphere has radius 3. What is its volume? (Express as a number times pi)

A sphere has radius 3. What is its volume? (Express as a number times pi)

A.

36pi

✓ Correct
B.

39pi

C.

36pi

D.

27pi

Detailed Explanation

[Variation 1] Choice A is the best answer. Volume = (4/3) times pi times r cubed = (4/3) times pi times 3 cubed = 36pi

Why others are wrong:
B: 39pi is incorrect because it does not satisfy the equation.
C: 36pi is incorrect because it does not satisfy the equation.
D: 27pi is incorrect because it does not satisfy the equation.