Question

A wall 10 m long, 20 em thick and 1.2 m high has been constructed as a partition between two plots of land. Find the cost of cementing it on five sides at the rate of 25 per sq. m.

Answer 1

area of the wall = 2(l+b)h .
2(10+20)1.2=72m².
Its one five area , 72×5=360m²,
cost,360×25=€9000m².