The diameter of the base of a right circular cylinder is 14 cm and its height is 20 cm. Then its curved surface area is
The diameter of the base of a right circular cylinder is 14 cm and its height is 20 cm. Then its curved surface area is
A) 594 cm2
B) 1188 cm2
C) 440 cm2
D) 880 cm2
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Correct option is: D) 880 cm2
Radius of base of cylinder is r = \(\frac {Diameter}2 = \frac {14}2 = 7 cm\)
Height of cylinder is h = 20 cm
\(\therefore\) Curved surface area of cylinder = \(2 \pi rh\)
= 2 \(\times\)\(\frac {22}7\) \(\times\) 7 \(\times\)20
= 880 \(cm^2\)
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