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Question

For a circle of radius r=10π cm.
Angle subtended by arc θ =12 .
What is the length of the arc in cm?


A

23 cm

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B

13 cm

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C

2 cm

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D

32 cm

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Solution

The correct option is A

23 cm


The formula for arc length
=θ360× 2π r

In this formula
θ =12,
r=10π

Arc length
=12360 × 2 × π × 10π

=23 cm


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