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A 10 -m long hall has a floor area of 10...

A 10 -m long hall has a floor area of `100 m^2`. Find its perimeter.

Text Solution

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The correct Answer is:
40 m
Area of hall `=lxxb`
`100=10xxb`
`b=100//b`
`b=10 m`
Perimeter `-2(10+10)=40m`
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