Question

solve the problem please ​

Answer 1

Answer:

6πr

Step-by-step explanation:

Area of circle is basically 2 π(r)^2

So the radius would of that circle would be 3r

Circumference is 2π(radius)

Iwe know that the radius is 3r

Therefore the circumference is

2xπ×(3r)

Therefore the answer is

6πr