Question

13: A room is 40 m long, 25 m broad and 10 m high. Find the cost of white-washing all
the four walls, if the cost of white-washing is ₹6
per m2​

Answer 1

Answer:

Given:

Length = 40m

Breadth = 25m

Height = 10m

Now

Lateral surface area of a cuboid = 2h (l+b)

= 2(10) (40+25)

= 20 (65)

= 1300 m²

Now,

1300 × 6

= ₹ 7800