If the radius of the circle is increased 3 times, then how many times the new circumference increase from its original size ?

Correct option is A

We know,
Circumference of circle = 2πr
If the radius of a circle is increased to 3 times
Then,
Circumference of circle = 2π x 3r
= 3(2πr)
Therefore the circumference of the circle increased by 3 times.