RS Aggarwal - Mathematics

Book: RS Aggarwal - Mathematics

Chapter: 18. Area of Circle, Sector and Segment

Subject: Maths - Class 10th

Q. No. 18 of Exercise 18A

Listen NCERT Audio Books to boost your productivity and retention power by 2X.

18

The circumference of a circle is 8 cm. Find the area of the sector whose central angle is 72°.

Given:

Circumference of circle = 8 cm


Central angle = 72°


Circumference of a circle = 2πr


2πr = 8


2 × × r = 8


r = 8 × ×


r = cm


Area of sector = × πr2


=


= 1.02 cm2


Chapter Exercises

More Exercise Questions