Question

A room 10m long, 8m wide and 4m high has two windows each 2m by 1.5m
and a door of 3m by 1.5m. Find the cost of white washing the walls at Rs 5 per
square metre.

Answer 1

Answer: ₹667.5

Step-by-step explanation:

Length(L)= 10m

Breadth(B)=8m

Height(H)= 4m

Area of all the four walls of the room

=2(L×H)+2(B×H)

= 144m²

Area of the door= 3×1.5 = 4.5m²

Area of the two windows= 2(2×1.5)=6.0m²

Therefore the area of the room that is to be white washed= 144 - (6+4.5)

=133.5m²

Cost= 133.5×5

=₹667.5

Thank you.