Question

7.) A bus stop is barricated from the remaining part of the road by using 50 hollow cones made of recycled cardboard. Each one has a base diameter of 40 cm and height 1 m. If the outer side of each of the cones
is to be painted and the cost of painting is Rs-25 per m², what will be the cost of painting all these cones? (Use π = 3.14 and √1.04 = 1.02.)​

Answer 1

 

here it is pl see the attachement