Question

5.
The area of a sector of a circle of radius 7 cm and
central angle 120° is
​

Answer 1

Area of sector = theta /360 πr^2

120/360 π7^2

49×22/7×3

49×22/21

1078/21

51.33.....

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Answer 2

area of sector =( theta / 360 )* pie radius square

= (120 / 360 )* 22/7 * 7*7

= 22/21*49

= (22*7)/3

= 154/3 cm sq