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# Lesson Worksheet: Equation of a Sphere Mathematics

In this worksheet, we will practice finding the equation of a sphere given its center and finding the center and the radius given the sphere’s equation.

**Q9: **

Does the equation describe a sphere? If so, find its radius and center.

- AYes, it describes a sphere. Its radius is 11 and its center is at .
- BYes, it describes a sphere. Its radius is 11 and its center is at .
- CNo, it does not describe a sphere.
- DYes, it describes a sphere. Its radius is 5 and its center is at .
- EYes, it describes a sphere. Its radius is 5 and its center is at .