Question

a godon is 50m long 40m broad and 10m high.find the cost of white washing its four walls and ceiling at rs 20 per square metre.

Answer 1

The given godown has the following dimensions:

l=50m
b=40m
h=10m

SA= Area of 4 walls + Ceiling
=CSA + lb
=2h(l+b) + lb
=2*10 (50+40) + 50*40
=20 (90) + 2000
=1800 + 2000
=3800 m^2

Given:
Rs.20 for 1m^2

So, for 3800 m^2, 20 * 3800
=Rs.76000

Hope it helps...