Question

area of the ceiling of a room 4m high is 48 m^2 . if the area of 4 walls of the room is 112 m^2 .calculate the length and breadth of the room .

Answer 1

Step-by-step explanation:

Total surface area of the cubiodal room=2[(8×4)+(8×3)+(4×3)]=2[32+24+12]=136

Area of the of rectangular floor(to be excluded)=8×4=32m

2

Area of 4 walls and the ceiling, =136−32=104m

2

Cost of repair Rs.30 per m

2

,=Rs.3120