find the radius of a circle in which a central angle of 72 degree intercepts an arc of length 22 cm .
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l=22cm and θ=(72×π180)c=(2π5)c. =352cm=17.5cm. Hence, the radius of the circle is 17.5 cm.
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2
Given,
Lenght =22cm
Radius=?
theta =72°
theta =(72×π180)c
=(2π5)c
=17.5cm
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