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Relation between Side and Perimeter of a Square/ Rectangles

The area of a...

Question

The area of a rectangle having length 'l' and breadth 'b' is equal to 'A'.Then area of rectangle having length 2l and breadth 2b will be equal to

A

2A

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B

A

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C

4A

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D

8A

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Solution

The correct option is C
4A

The unchanging relation of area is given by A= $l \times b$

The area of new rectangle will be given by A'= $2 l \times 2 b$

A'=4lb

A'=4.A

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