The length ,breath and the heigh of room are 5m,4m,3m respectivel.find the cost of white washing the walls of the room and the ceiling at the rate of ₹ 7.50 per m^
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Answered by
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Answer:
Rs 450
Step-by-step explanation:
5 X 4 X 3 = 60
cost = 60 X 7.50 = Rs 450.00
choudhary57:
wrong answer
Thanku for answering but i need with working
wrong, its 420
then choudary send me the cortect answer
i hv sent
correct one
brother check that you did mistake in calculations
6*9 +20=74 hote h 56 nhi
Answered by
0
Length - 5m
Breadth - 4 m
Height - 3m
To find - cost of white washing walls and ceiling
Area to be whitewashed - area of walls + ceiling
= 2h(l+b) + lb
=2×3(5+4)+5×4
=6×9+20
=56m²
rate - 7.50 /m²
cost - 56×7.5
=rupees 420
Breadth - 4 m
Height - 3m
To find - cost of white washing walls and ceiling
Area to be whitewashed - area of walls + ceiling
= 2h(l+b) + lb
=2×3(5+4)+5×4
=6×9+20
=56m²
rate - 7.50 /m²
cost - 56×7.5
=rupees 420
wrong answer
i dont see any mistake..
The mistake lies in the step: 6*9+20. According to BODMAS first operation to be performed is multiplication so the equation simplifies to 54+20 and then finally 74.... That's all... Hope it helps
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