Question

a wall is 10m long 20cm thick and 1.2m high has been constructed as a partition between two plots of land .find the cost of cementing it on 5 sides at the rate of rupees 25 per sq.m

Answer 1

6000 is the answer because we need to find the area 10×20×1.2=240×25=6000

Answer 2

here's ur answer!!!

we have to find the cost of cementing the wall of five sides.

therefore we have to find it's CSA+1base

length=10m

breadth=20cm=0.2m

height=1.2m

CSA+1base=2h(l+b)+lb

=2×1.2(10+0.2)+(10×0.2)

=2.4×10.2+2

=24+2

=26m²

cost of cementing=26×25

=₹650

hope this helps u...