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An arc of lenght 28m subtends an angle of 24 at the centre of a circle.In the same circle,what angles does an arc of lenght 35m subtend?

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arc length is proportional to the angle.
So you have proportion
θ/35 = 24/28

What angle does an arc 5.5cm in length subtends at the centre of a circle of radius 1/2m?

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