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Question

The length of a rectangle is twice the width of it. If perimeter of the rectangle is 42 m, find the area of the rectangle.


A

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B

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C

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D

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Solution

The correct option is A


Let the breadth of rectangle be x.
Given, Length = 2x
Perimeter =2(length+breadth)
2(x+2x)=42m

3x=422m

On solving, we get x = 7 m
Breadth = x= 7 m
Length = 2x = 14m

Area =length×breadth
=14 m×7 m
=98 m2


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