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13-10-2020
Mathematics

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If the perimeter of a rectangular room of 5 m high is 26 m, what will be the area of four walls of the room?

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13-10-2020

P=2(l+b)
Or,26=2(l+b)
Or,l+b=26/2
.
. .l+b=13
Now,
Area of 4 walls=2h(l+b)
=2*5(13)
=130

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