Question

what is the perimeter (in cm ) of a square circumscribing a circle of radius 'r' cm ?​

Answer 1

Answer:

Let ABCD is a square circumscribing a circle of radius

′

a

′

cm.

The side of square ABCD = Diameter of circle

⇒AB=2a

Therefore, perimeter of square AB(1)=4×AB=4×2a=8acm

Answer 2

Answer: 8rcm

step by step explanation:

Let ABCD is a square circumscribing a circle of radius ′a ′cm.

Let ABCD is a square circumscribing a circle of radius ′a ′cm.The side of square ABCD = Diameter of circle

Let ABCD is a square circumscribing a circle of radius ′a ′cm.The side of square ABCD = Diameter of circle⇒AB=2r

Therefore, perimeter of square AB(1)=4×AB=4×2r=8acm

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