Question

Find the cost of painting 15 cylindrical pillars of a building at rupees 2.50 sq m if the diameter and height of each pillare are 48 cm and 7 metres

Answer 1

csa of pillatrs      15*2*22/7*r*h >15*2*22/7*24/100*7>158.4msq
cost of paint>158.4*2.50>RS396