10
Answer: BSet 2: Area Volume (Advanced)
Explanation
PROBLEM
A cone has radius 3 and height 12. What is its volume? (Express as a number times pi)
A cone has radius 3 and height 12. What is its volume? (Express as a number times pi)
A.
72pi
B.✓ Correct
36pi
C.
36pi
D.
108pi
Detailed Explanation
Choice B is the best answer. Volume = (1/3) times pi times r squared times h = (1/3) times pi times 9 times 12 = 36pi
Why others are wrong:
A: 72pi is incorrect because it does not satisfy the equation.
C: 36pi is incorrect because it does not satisfy the equation.
D: 108pi is incorrect because it does not satisfy the equation.
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