If the radius of a circle is increased to 3 times, then how many times will it'

Question

If the radius of a circle is increased to 3 times, then how many times will it's circumference be increased?

Options:

A . 2times

B . 3times

C . 1/3 times

D . 9times

Answer: Option A

Let the original radius = R then
circumference =
New radius = 3R
new circumference =
Increased =

= 2 x original circumference

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