A wooden artifact is in the form of a cylinder surmounted by a semi-sphere. the diameter of cylinder is 42 cm and height is 40cm. find the cost of painting the curved surface at the rate of rs. 10 per 1000 sq. cm (base is not painted).
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C.S.A of whole shape = 2*22/7*21*40+2*22/7*21*21
=5280+2772
=8052 sq.cm
cost=80.52 rupees
=5280+2772
=8052 sq.cm
cost=80.52 rupees
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