RS Aggarwal - Mathematics

Book: RS Aggarwal - Mathematics

Chapter: 18. Area of Circle, Sector and Segment

Subject: Maths - Class 10th

Q. No. 4 of Multiple Choice Questions (MCQ)

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4

The perimeter of a circular field is 242 m. The area of the field is

Let the radius if circular field be r


Perimeter of circular field = 2πr


Perimeter of circular field = 242 m


2πr = 242 m


2 × 22/7 × r = 242 m


r = 242 × 1/2 × 7/22 = 38.5 m


Radius of circular field = 38.5 m


Area of the field = πr2


= 22/7 × 38.52 m2


= 22/7 × 1482.5 m2 = 4658.5 m2


Area of the field = 4658.5 m2

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