Mark the correct alternative in the following:

If the arcs of the same length in two circles subtend angles 65° and 110° at the centre, then the ratio of the radii of the circles is


Let radius of two circles be the r1 and r2

Let θ1 and θ2 be the subtend angles of arcs of two circles


i.e. θ1=65° and θ2=110°


We know that arc length,


l = r × θ


Here, arc lengths of two circles are same.


∴ r1×θ1=r2×θ2




∴r1 :r2 =22:13

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