Question

If curved surface area of a cylinder is 616 sq cm and height is 14 cm, find its radius?

A) 14 cm B) 7 cm C) 21 cm D) 3.5 cm

Answer 1

Answer:

$c.s.a = 2\pi \: r \: h \\616 = 2 \times \frac{22}{7} \times r \times 14 \\ 616 = 44 \times r \times 2 \\ 616 = 88 \times r \\ \frac{616}{88} = r \\ 7 = r \\ r = 7cm$

Step-by-step explanation:

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