Question

a room is 10m long 8m wide and 3m high. it has two doors each of dimensions(2m*1.5) and three windows each of dimensions 1m*75. find the cost ofpainting the walls of the room from inside at the rate of rs 10 per meter square​

Answer 1

Given;

length = 10m

breadth = 8m

Height = 3m

Area of 4 wall including doors and windows:

A = 2h (l + b)

or, 2*3 (10+8)

or ,6 * 18

A = 108^2

now area of 2 doors :

2*(2*1.5)

6m^2

area of 3 windows

3 * (1*0.75) (Question mistake)

2.25m^2

area of 4 wall excluding doors and windows

A= 180 - 6 - 2.25

A= 171.75

Total cost = 10 * 171.75

#Cost = 17175