2021 AMC 12B Problem 6


An inverted cone with base radius 12cm12 \text{cm} and height 18cm18\text{cm} is full of water. The water is poured into a tall cylinder whose horizontal base has a radius of 24cm24\text{cm} . What is the height in centimeters of the water in the cylinder?

(A) 1.5(B) 3(C) 4(D) 4.5(E) 6\textbf{(A) }1.5 \qquad \textbf{(B) }3 \qquad \textbf{(C) }4 \qquad \textbf{(D) }4.5 \qquad \textbf{(E) }6


Full credit goes to MAA for authoring these problems. These problems were taken on the AOPS website.

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Category: AMC 12B
Points: 2
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