Question

The dimensions of a room are 8m , 6m and 5m . Find the cost of white washing is it's 4 walls at the rate of ₹80 per square meter

Answer 1

Given the dimensions of the room are,

8cm,6cm,5cm

Let, l=8cm,

b=6cm,

h=5cm

So, area of the 4 walls of the room=2×(l+b)×h

=2×(8+6)×5

=140cm

2

Hence, the cost of dis-tempering the 4 walls of the room at the cost of Rs.80 per square metre=140×80=Rs.11200.