Question

What is the circumference of a
circle with a radius of 2.09 in

Answer 1

The circumference formula is C=3.14d

Explanation:

To find the diameter with the radius you need to multiply 2.09 x 2.

Now you have 4.18, this is your diameter, you're now going to multiply 4.18 with pi, which is typically 3.14, if it's not that it's 22/7.

Your answer would be 13.12

Answer 2

you do 2.09x2 to get the diameter then times that by pi to get 13.13 to 2 decimal places