Answer:
20π m or 62.83 m
Explanation:
The formula for Circumference is C = 2πr
All you need to find for the formula is the radius, which is half of the diameter.
![r= \frac{1}{2}d](https://tex.z-dn.net/?f=r%3D%20%5Cfrac%7B1%7D%7B2%7Dd)
![r=(\frac{1}{2})(20)](https://tex.z-dn.net/?f=r%3D%28%5Cfrac%7B1%7D%7B2%7D%29%2820%29)
![r=10](https://tex.z-dn.net/?f=r%3D10)
Then plug the radius into the formula and solve for Circumference
![C= 2\pi r](https://tex.z-dn.net/?f=C%3D%202%5Cpi%20r)
![C=2\pi (10)](https://tex.z-dn.net/?f=C%3D2%5Cpi%20%2810%29)
or ![C= 62.83 m](https://tex.z-dn.net/?f=C%3D%2062.83%20m)
The correct sentence is A.
If you walk outside your door and look up you'll see that the sky is what's up. It made me put more than "the sky." But there ya go. That is what's up.