If the curved surface area of a cylinder is 1760cm2 and

If the curved surface area of a cylinder is 1760cm2 and
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If the curved surface area of a cylinder is 1760cm2 and its base radius is 14 cm then its height is

(a) 10cm         (b) 15 cm         (c)20 cm             (d) 40 cm

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Right Answer is:

SOLUTION

ANSWER:
(c) 20 cm
Curved surface area = 1760 cm2
Suppose "h" cm is the height of the cylinder.
Then we have:
2πrh = 1760
⇒ 2×227 × 14 × h = 1760
⇒h = 1760×744×14 = 20 cm