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The curved surface area of a cylinder is five time the area of its base. Find the ratio of radius and height of the cylinder.

A. 2 : 3

B. 3 : 5

C. 2 : 5

D. 3 : 4

Answer: Option C

Solution(By Examveda Team)

$$\eqalign{ & \frac{{2\pi rh}}{{\pi {r^2}}} = \frac{5}{1} \cr & \frac{{2h}}{r} = \frac{5}{1} \cr & r:h = 2:5 \cr} $$

This Question Belongs to Arithmetic Ability >> Mensuration 3D

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