Question

if the area of a sector of a circle bounded by an arc of length 5pie is equal to​

Answer 1

area of sector =πr2 theta

5π=πr2 theta

Answer 2

Answer:

⇒

360

θ

×2πr=5πand

360

θ

×πr

2

=20π

⇒

360

θ

×2πr

360

θ

×πr

2

=

5π

20π

⇒

2

r

=4

⇒ r=8cm

We have Area =

2

1

lr⇒20π=

2

1

×5π×r⇒r=8cm