alleryA metal sphere of radius 3 cm is recast into a cylinder of radius 2 cm. What is the cylinder's height?
A12 cm
B4.5 cm
C6 cm
D9 cm
Answer & Solution
Correct answer: D. 9 cm
Equal volumes give 4/3 π × 27 = π × 4 × h, so 36π = 4πh and h = 9 cm.
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