Question

Find the CIRCUMFERENCE of a circle with a RADIUS of 13mm. Use 3.14 for the value of pi.

Answer 1

Circumference = 81.64

Explanation:

The formula for finding circumference is C = pi(d). Since you don't have the diameter, but you do have the radius (which is half of the diameter), you will multiply 13 by 2, or 13 x 2. 13 x 2 = 26. So, the diameter is 26.

Fill in what you know: C = 3.14(26)

Now, all you have to do is multiply 3.14 and 26, which equals 81.64.

Hope this helps! :)

Answer 2

For finding circumference you want to double the radius first to get a diameter. 13mm*2= 26mm so the diameter is 26 now we need to multiply it by 3.14 (the first 3 digits of pi). 26mm*3.14= 81.64mm Hope this helped!!

Btw if you ever get answers saying to go to a link or hosting page for the asnwer DO NOT I MEAN DO NOT click or copy and paste them. They are links used by hackers to get your ip address. Instead just report the response or answer.