A room is 9m long and 8m broad and 6m high. It has one door of dimensions 2m × 1.5m and three windows each of dimensions 1.5m × 1m . Find the cost of white washing the wall at Rs 3.80 Per square metre.
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Answer:
Step-by-step explanation:
Area of room to be whitewashed=
Curved surface area of room - (area of two door + area of three windows)
2(9m+8m)6m - {(2×2m×1.5m) + (3×1.5m×1m)}
204m^2 - (6m^2 + 4.5m^2)
204m^2 - 10.5m^2
193.5m^2
Cost of whitewashing= ₹(193×3.89)
₹735.3
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