Question

A room is 15m long and 7 m broad. It has one door measuring 2 m by 1.3 m and two windows each measuring 1.8 by 1.8 . The cost of painting the walls of the room at the rate of 100 per m^2 is 56616 m^2 . The height of the room is .

Answer 1

Step-by-step explanation:

Let height be h

Area of 4 walls=2h(l+b)

So,

100{2h(15+17)-(2*1.3)-(2*1.8*1.8)}=56616

64h-2.6-6.48=566.16

64h=575.26

h=8.98m