The length of a room is 3 times of its breadth and perimeter is 40m. Find the cost of carpeting the room with a carpet of 1.5m width at the rate of Rs300/m^2?
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p=2 (a+b)
let the side be x
2 (3x+x)=40
8x=40
x=5
a=15×5=75
300×75=22500.
let the side be x
2 (3x+x)=40
8x=40
x=5
a=15×5=75
300×75=22500.
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