Question

The cost of painting the inner curved surface area of a cylindrical container of depth 20 m is Rs. 8800. Painter takes Rs. 40 per metre square to paint the cylindrical container. Find the inner curved surface area of the vessel.(in $m^2$)

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Answer 1

Cost of painting the inner curved surface = Rs. 8800.
Cost of painting per square meter = Rs. 40
Hence, painted area $=\frac{8800}{40}=220m^2$
Thus, inner curved surface area $=220m^2$