Question

the perimeter of the floor of a room is 40 m and it's height is 4.5 m. find the area of the four walls of the room also find the cost of papering the four walls at rs 25 per m square

Answer 1

perimeter is 40
so side is 10
height is 4.5
so area of 4 walls is 4×10×4.5
=180 m square
so cost =- 25 × 180
=4500
hope it helps