The radius of a cylindrical can is 25 cm and its height is 14 cm. Find the cost of painting the curved surface area of 50 such identical cans at the rate of ₹3 per 1000 cm^2(Take 22/7 for π).
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Answer:
given , r = 25 cm, h = 14 cm
to find cost of painting 50 such cans at Rs 3 per 1000 cm²
CSA = 2πrh
=> 2*22/7*25*14
=> 2200 cm²
total area to be painted is
number of cans × CSA of one can
=> 50 × 2200
=> 1,10,000 cm²
therefore cost of painting 50 cans
=> (110000 × 3)÷1000
=> Rs 330
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