Question

What is the circumference of a circle with a radius of 8cm? Express your answer in terms of pi

Answer 1

`C = 16\pi`

Explanation:

Ok, so the equation so find the circumference of a circle is C = 2
`\pi r\\`

So we can fill in the variable for radius as we know it is 8. The equation show know look like this:

`C = 2\pi (8)`

Now we just need to multiply the numbers 2 and 8 together.

`C= 16\pi`

So, because we leave the answer in terms of pi, we're done! :)