Find the cost of painting the outside surface of a solid cylinder of diameter 7m and height 20m at ₹5 per m²

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Solution

I think the rate of painting should be Rs 5/m2 Answer : We know Total surface area of cylinder =2πr(r+h) Diameter of cylinder = 7 m , So radius of cylinder = 3.5m And Height of cylinder = 20 m TSA=2×3.14×3.5[20+3.5]= 516.5m^2 Cost ofpainting1m2area=Rs 5 Cost ofpainting 516.5 m2 area=Rs(5×516.5)=Rs 2582.65 Rs Ans

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Find the cost of painting the outside surface of a solid cylinder of diameter 7m and height 20m at ₹5 per m​​​​​​2

Find the cost of painting the outside surface of a solid cylinder of diameter 7m and height 20m at ₹5 per m²