The internal measures of a cuboidal room are 12 m x 8m x 4m Find the total cost of white washing the walls of the room and
the ceiling at the rate of 7.50 per m².
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Answer:
The dimensions of room is 12×8×4
The Lateral surface area is
2h(l+b)
2(4)(12+8)
8×20=160m
2
Cost of white wash is 5m
2
Total cost is 5×160=800Rs,
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