An arcPQ is subtends an angle 60° at the center of a circle of radius 1m. The length PQ is
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Answer:
Area of sector =231cm
2
Angle subtended =60
∘
A=πr
2
360
∘
θ
231=
7
22
×r
2
×
360
∘
60
∘
⇒r
2
=
22
7
×231×6=441
⇒r=
441
=21
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