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Area of a Sector of a Circle

Find the angl...

Question

Find the angle subtended at the centre of a circle of radius 'a' by an arc of length (aπ/4) cm.

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Solution

We know that the arc length l of a sector of an angle θ in a circle of radius r is

It is given and radius.

Now we substitute the value of l and r in above formula to find the value of angle θ subtended at the centre of circle.

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