# If the radius of the circle is increased 3 times :

If the radius of the circle is increased 3 times. Then hoe many times the new circumference increase from its original size ?

(a) 3

(b) 1/3

(c) 9

(d) None of these

**Answer: (a) 3**

**Solution:-**

Let the radius of a triangle be R cm

Then, the circumference of a circle = 2 pR

If the radius of the circle is increased by 3 time.

Then, radius = 3 R

Now, new circumference of a circle = 2 x p x 3 R

= 6 pR

New circumference of a circle = 3 x 2pR (circumference of original circle)

So, the circumference of new circle will be 3 times from its original size.

Hence, the correct answer is option (a) 3.