Question

If the radius of a circle is 20 cm and the angle formed at the sector is 270 degree then area of sector is​

Answer 1

Answer:

Given, radius, r=20 cm, central angle, θ=90

o

, π=3.14

Area of sector =

360

o

θ

×πr

2

=

360

o

90

o

×3.14×20×20

=

4

1

×

100

314

×20×20

=314

∴ the area of sector is 314 cm

2

.