Question

The length, breadth and height of a room are 5 m, 4 m and 3 m, respectively. Find the cost of white
washing the walls of the room and the ceiling at the rate of ₹10.50 per m2
.

Answer 1

Step-by-step explanation:

l=5m

b=4m

h=3m

Area of walls= CSA OF ROOM

=2h(l+b)

=2*3(5+4)

=6*9

=54m²

Area of ceiling = l*b

=5*4

=20m²

Total area = 74m²

Cost pet m² = 10.50

So, Cost for 74 m² = 74*10.50

=Rs 777

Therefore,the cost of painting the walls is Rs 777.

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