Question

The length breadth and height of a room are 5m, 4m, 3m respectively. find the cost if white washing the the inner of the room and ceiling at the rate if ₹ 50 per m².​

Answer 1

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Total Surface Area to be white washed

=LTA+ Area of the base

=2(l+b)h+lb=2(5+4)×3+5×4m

2

=74m

2

Cost of white washing =Rs.(74×7.50)=Rs.555

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Answer 2

Answer:

The cost of whitewashing the walls of the room and ceiling will be equal to the area of the room to be whitewashed multiplied by the rate of the whitewashing per m2. Thus, the cost of whitewashing the walls of the room and the ceiling is ₹555.