SOLUTION: An open cylindrical drum has radius 42 cm and height 129 cm. What is the cost of painting .Its outer surface along with base at the rate of 100 sq cm per 75 paise?

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Question 992082: An open cylindrical drum has radius 42 cm and height 129 cm. What is the cost of painting .Its outer surface along with base at the rate of 100 sq cm per 75 paise?

Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
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An open cylindrical drum has radius 42 cm and height 129 cm.
What is the cost of painting.
Its outer surface along with base at the rate of 100 sq cm per 75 paise?
:
C = %28%28pi%2Ar%5E2%29%2B%282%2Api%2Ar%2Ah%29%29%2F100 * 75
The surface area divided by 100 sq/cm times 75
r = 42; h = 129
C = %28%28pi%2A42%5E2%29%2B%282%2Api%2A42%2A129%29%29%2F100 * 75