Question

The volume of a suare room has a door of 2m x 1.5m and two windows, each of
1m x 1.5m is 900m^3. If the cost of paving tiles including wage at Rs. 7.50/m² is
Rs. 1687.50, find the cost of colouring 4 walls at Rs. 12.50/m^2.​

Answer 1

Answer:

357.6 Rs

Step-by-step explanation:

Given.

rate of paving tiles=7.5rs/m²

cost for paving tiles=1687.5rs

area of floor is equal to 1687. 5 / 7.5 which is 225 metre ².

So side of square room is 15 metre.

area of 4 walls of the room is equal to 15 x 15 x 4 which is is equal to 900 metre square.

area to be painted is equal to 900 -area of Windows + area of door

area to be painted is equal to 894 metre square.

cost for painting is equal to 357.6 rupees

Hope it would be helpful.