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Q.

What is the circumference of a circle with radius 5 cm ?

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a

10π

b

None of these 

c

15π

d

25π

answer is A.

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Detailed Solution

It is given to find the circumference of a circle which has radius 5 cm.
We know that circumference of circle with radius r will be = 2πr .
Here r = 5 cm.
So the circumference of the circle is 2πr cm
⇒ 2π(5)
⇒10π
So the circumference is 10π cm.
So the  correct option is 1.
 
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