Question

The dimensions of a room are 8 m x 6 m x h.It has two doors each of size 2 m x 1 m and one almirah of size 3 m x 2 m.The cost of covering the walls by wall paper which is 40 cm wide at rs.1.25 per metre is 362.50.Find h (height)

Answer 1

Area of both the doors and almirah is 10m2
Area to be painted=28h-10
Painted area= 362.50/1.25=290
Now
290*0.40=116
According to the question
116=28h-10
126=28h
h=126/28
h=4.5
hence the height is 4.5m