Question

In a circle of diameter 40 cm, the length of chord is 20 cm .Find the length of minor arc of the chord...

Answer 1

Answer:

Step-by-step explanation:

Diameter=40cm

Length of the chord=20cm

Radius=20cm

Since radius=length of chord=20cm

Hence the formed Δle in the circle is equilateral Δle

⇒θ=60∘

We know that l=rθ

l=20×60∘×π180∘

l=20π3

Thus length of the minor arc of the chord is 20π3

hope it will helps u

Answer 2

let OB is the minor arc

so,

minor arc OB = pai *r *thita/180

=pai*20*60/180

=20pai/3