Question

If in two circles ,arc of the same length substend angle 60 and 75

Answer 1

Let the length of the circle be ll

Angle of the circle 1 =60∘60∘

Angle of the circle 2 =75∘75∘

Let the radius be r1r1 and r2r2

l=r1θl=r1θ

⇒r1×60×π180⇒r1×60×π180

⇒πr13⇒πr13

l=r2θl=r2θ

⇒r2×75×π180⇒r2×75×π180

⇒5πr212⇒5πr212

Since ll is same for both the circles

⇒πr13=5πr212⇒πr13=5πr212

⇒r1:r2=5:4

Answer 2

Answer:

THE ANSWER IS 5/4

Step-by-step explanation: