The Length breadth and height of a room are 5 m 4 m and 3 m respectively find the cost of whitewashing the inner of the room and ceiling @ rupees 50 per square metre.
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Area to be white washed= CSA of cuboid+ Area of ceiling.
Area to be white washed= 2h(l+b) + lb
= 2*3(5+4) + 5*4
= 6*9 + 20
= 54+20
= 74m².
Cost of white washing= 74*50
= 3700 rupees.
Area to be white washed= 2h(l+b) + lb
= 2*3(5+4) + 5*4
= 6*9 + 20
= 54+20
= 74m².
Cost of white washing= 74*50
= 3700 rupees.
abelalex2000:
pls mark as branliest
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