# Q (4)  Find the degree measure of the angle subtended at the centre of a circle of radius 100 cm by an arc of length 22 cm  (use  )

Solution

We know that
( where l is the length of the arc, r is the radius of the circle and  is the angle subtended)

here    r = 100 cm
and  l = 22 cm
Now,

We know that

So,
Angle subtended at the centre of a circle

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