RS Aggarwal - Mathematics

Book: RS Aggarwal - Mathematics

Chapter: 18. Area of Circle, Sector and Segment

Subject: Maths - Class 10th

Q. No. 5 of Exercise 18A

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What is the perimeter of a square which circumscribes a circle of radius a cm?


Perimeter of square circumscribes a circle of radius ‘a’.


Side of square = Diameter of circle

Diameter of circle = 2 × radius

= 2a

So, Side of square = 2a

Perimeter of square = 4 × side

Perimeter of square = 4 × 2a

= 8a

Hence, the perimeter of the square is 8a.

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