RS Aggarwal - Mathematics

Book: RS Aggarwal - Mathematics

Chapter: 18. Area of Circle, Sector and Segment

Subject: Maths - Class 10th

Q. No. 2 of Exercise 18A

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2

The circumference of a circle is 22 cm. Find the area of its quadrant.

Given:

Circumference of circle = 22 cm


Let the radius of the circle be ‘r’.


Circumference of circle = 2πr


22 = 2 × π × r


22 = 2 × × r


22 × × = r or = r


or r =


Area of circle = πr2


Area of its quadrant = πr2


=


=


Hence the area of the quadrant of the circle is cm.


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