CBSE Class 9 Answered
A cylindrical pillar is 49 cm in diameter and 3.5 m in height. Find the cost of painting the curved surface of the pillar at the rate of Rs 100 per m2
Asked by Topperlearning User | 12 Oct, 2017, 08:50: AM
Expert Answer
diameter of the cylindrical pillar = 49 cm⇒ radius (r) = 24.5 cm
Height (h) = 3.5 m=350 cm
Let S denote the curved surface area of the pillar.
Cost of painting 1 m2 = Rs 100
Cost of painting 5.39 m2= Rs (5.39×100) = Rs 539
Answered by | 12 Oct, 2017, 10:50: AM
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