1984 AIME Problems/Problem 9

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Problem

In tetrahedron $\displaystyle ABCD$, edge $\displaystyle ABC$ has length 3 cm. The area of face $\displaystyle AMC$ is $\displaystyle 15\mbox{cm}^2$ and the area of face $\displaystyle ABD$ is $\displaystyle 12 \mbox { cm}^2$. These two faces meet each other at a $30^\circ$ angle. Find the volume of the tetrahedron in $\displaystyle \mbox{cm}^3$.

Solution

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See also