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Question

The perimeter (in cm) of a square circumscribing a circle of radius a cm, is


A

8 a

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B

2 a

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C

16 a

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D

4 a

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Solution

The correct option is

A

8 a

It is given that a square circumscribes a circle of radius a cm. Side of the square = Diameter of thecircle

Side of the square=2a

Perimeter of the square =4×2a=8a

Hence, the correct answer is option (A).


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