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4.A cylindrical pillar is 50cm in diameter and 3.5m in height. Find the cost ofpainting it's curved surface at the rate of12.50 per sq.m​

Answer» R= 50/2=25cm=25/100= 0.25m CSA=2πrh=(2×22/7×0.25×3.5)sq.m =5.5 sq.m COST of PAINTING 1 sq.m AREA= Rs.12.50Cost of painting 5.5 sq.m area =Rs.5.5×12.50 = Rs.68.75


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