Question

What is the length of an arc which subtends an angle of 60degree at the center of a circle of radius of 1/2 metre

Answer 1

Answer:

Area of sector =231cm

2

Angle subtended =60

∘

A=πr

2

360

∘

θ

231=

7

22

×r

2

×

360

∘

60

∘

⇒r

2

=

22

7

×231×6=441

⇒r=

441

=21