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The perimeter (in cm) of a square circumscribing a circle of radius a cm, is
  • a)
    8 a
  • b)
    4 a
  • c)
    2 a
  • d)
    16
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
The perimeter (in cm) of a square circumscribing a circle of radius a ...

Given: Radius of the circle = r = a cm
To find the perimeter of the square.
Since the diameter of the circle is equal to the side of the square, therefore, side of the square = 2r = 2a cm a
Now, the perimeter of the square = 4 � (Side)
Thus, the perimeter of the square = 4(2a) cm
= 8a cm

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