Question

Given the dimensions of the room of length 200 m, breadth 175m and height is 100m. One of the
wall has a square window of 1.5 m length , the other wall is occupied with a mirror of
dimension 100cm x 70cm. Determine the area of the walls to be painted

Answer 1

Answer:

if your ques is The length, breadth and height of a room are 5 m, 4 m and 3 m respectively. Find the cost white washing the walls of the room and ceiling at the rate of Rs. 7.50 per m

2

.then here is you ans

Step-by-step explanation:

Given:

L=5 m, B=4 m, H=3m

⇒Area to be white-washed = Area of cuboid − Area of base.

=2lh+2bh+2lb−lb

=2lh+2bh+lb

=[2×5×3+2×4×3+5×4]m

2

=74m

2

Cost of white washing per m

2

area = Rs.7.50

Cost of white washing 74m

2

area=74×7.50

= Rs.555