alleryA full cylinder (r=6,h=8 cm) contains a solid cone of the same r,h. Pour its water into a cylinder r=4 cm. New depth?
A12 cm
B8 cm
C6 cm
D18 cm
Answer & Solution
Correct answer: A. 12 cm
Water volume is π×6²×8 − (1/3)π×6²×8 = 192π cm³; dividing by base area 16π gives depth 12 cm.
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