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Q.

The circumference of the circle with radius 1 m is (in m)

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a

 3π

b

None of these 

c

 2π

d

 4π

answer is B.

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Detailed Solution

It is given to find the circumference of the circle with radius 1 m.
The formula of the circumference of the circle with radius r is,
 2πr.
So the circumference of the circle will be,
 2π(1)
⇒2 π m
So the correct option is 2.
 
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The circumference of the circle with radius 1 m is (in m)