Question

The cost of plastering the ceiling of room a is rs.420. The dimensions of the ceiling of room b are double the dimensions of the ceiling of room



a. The cost of plastering the ceiling of room b is

Answer 1

heyya .....ur answer is here :

420 rs.

as we know the area of 4 walls = 2(l+b)*h

=2(4.5+3)*3.5

=2*7.5*3.5

=52.5 m²

so cost of plastering the room = area * cost

= 52.5*8

=420 rs.