🧠 GRE Exam Prep

A right circular cylinder has a radius of r and a height of h. If its volume is V, and its lateral surface area is A, what is the ratio V/A in terms of r and h?

A r/2
B h/2
C r/h
D r/(2h)

✓ Correct Answer: Option A

The volume of a cylinder is V = πr²h. The lateral surface area of a cylinder is A = 2πrh. The ratio V/A = (πr²h) / (2πrh). Cancel out common terms (π, r, h), leaving r/2.

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