Question

a room is 13m long 10.5m wide and 5.4m high a paper is to be fixed on all the walls of the room if the room has three doors each of dimensions 3m by 2m and four windows each of dimension 2m by 1.5m find the cost of fixing the wallpaper at the rate of rs 48 per sq m

Answer 1

first of all lateral surface of wall 2(l+b)×h