class 10
maths- area related to circle
ques:- the perimeter of a square circumscribing a circle of radius a cm is equal to
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Answer:
Your answer-8cm
Step-by-step explanation:
When a square circumscribes a circle, the radius of the circle is half the length of the square.
Therefore if the radius of the circumscribed circle is a, the diameter will be 2a. It is this diameter that is equal to the length of the square.
Therefore the length of the square is 2a cm.
The area of a square is 4 × length
= 4 × 2a cm
= 8a cm
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