Question

In a circle of diameter 84cm, if an arc subtends an angle of 60˚ at the centre where

22

7

  , then what will be the length of arc.​

Answer 1

Step-by-step explanation:

ANSWER

Given

⇒ Length of an arc =20πcm

⇒ θ=144

o

⇒ Length of an arc =

360

o

θ

(2πr)

Where, θ is angle subtended at a center.

2πr is circumference of a circle.

∴ 20π=

360

o

144

o

×2πr

∴ r=

4

100

=25cm....,.....,......