a cylindrical pillar is 50 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 12 .50 per M2
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radius= 50/2 cm = 25/100=.25
curved surface area of pillar = 2πrh
= 2*(22/7)*(.25)*(3.5)= 5.5 m2
cost = (5.5)(12.50) =Rs 68.75
curved surface area of pillar = 2πrh
= 2*(22/7)*(.25)*(3.5)= 5.5 m2
cost = (5.5)(12.50) =Rs 68.75
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Cost of painting is 68 rs 75 paise
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