RPF 10 Jan 2019

Question 110

If the radius of a circle is Five times, its perimeter will become how many times of its previous perimeter?

Solution

Radius of circle is directly proportional to perimeter, $$P=2\pi r$$

So, if radius is increased 5 times, hence the perimeter will become 5 times of its previous perimeter.

=> Ans - (C)


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