Arithmeticmedium · Past Paper
The ratio of the radii of two cylinders is 2:3 and the ratio of their heights is 5:4. Find the ratio of their volumes.
A5:9
B20:27
C4:9
D5:6
✓ Correct Answer: A — 5:9
Volume = pi * r^2 * h. Ratio = (r1^2 * h1) / (r2^2 * h2) = (2^2 * 5) / (3^2 * 4) = (4 * 5) / (9 * 4) = 5/9.
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