find the cost of painting the outside surface of a solid cylinder of diameter 7m and height 25m at ₹8 per square meter
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r=7/2m
h=25m
CSA= 2×22/7×7/2×25
CSA= 22×25
CSA= 550 m²
Cost of painting 1 m²=₹8
Cost of painting 550m²=₹(550×8)=₹4400
h=25m
CSA= 2×22/7×7/2×25
CSA= 22×25
CSA= 550 m²
Cost of painting 1 m²=₹8
Cost of painting 550m²=₹(550×8)=₹4400
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