Question

The length, breadth and height of a room are 5m, 4m and 3m. The cost of

painting its four walls at the rate of Rs. 7.50 per m2 is ______________.​

Answer 1

Answer:

Hope it will be helpful to you

Answer 2

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Dimension of the room = 5m × 4m × 3m

Curved surface area of the room = 2h(l+b)

2 × 3 ( 5 + 4 ) = 6 × 9 = 54 m^2

Cost of painting the wall of 1 m^2 = ₹ 7.50

So, cost of painting 54m^2 = ₹ ( 54 × 7.50 )

₹ 405.

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