the diameter of a cylinder is 12cm and height is 21.find surface area
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Hey mate ! here is your answer
Diameter = 12 cm
Radius = d/2 = 12/2 = 6cm
Height = 21 cm
Therefore, Curved Surface area = 2 pie r h
= 2 × 22/7 × 6 × 21
= 44×18 = 792 cm2.
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