Mensurationhard · Past Paper
A cylinder has radius 'r' and height '2r'. A sphere has radius 'r'. What is the ratio of their volumes?
A2:3
B3:2
C1:1
D4:3
✓ Correct Answer: B — 3:2
Vol_cyl = πr^2(2r) = 2πr^3. Vol_sph = (4/3)πr^3. Ratio = 2 : 4/3 = 6:4 = 3:2.
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