Question

Studying for a test but I’m kinda confused here because it says the answer is 20cm but I’m getting it wrong every time so can someone explain why it’s 20cm

Answer 1

The circumference is 2 times radius of 10 times pi
or pi times the diameter which is 20.. the correct answer is 20 times pi (3.14usually) or 60.28 com.

Answer 2

Hope this helps. :)

Explanation:

The circumference formula is 2 times pi times r, so 2 times 3.14, times your radius. In this question it wants us to leave the answer in terms of pi. So all you do is 2 times the radius which is just 2 times 10. If you still don't understand let me know and I can help explain it to you again using an example.