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April 25, 2014

April 25, 2014

Posted by **Marcus** on Thursday, February 21, 2008 at 5:52pm.

a. What is the surface area of the cylinder?

b. What is the volume of the cylinder?

Need help on this one. I have the formula but I'm a little confused because I don't know what the radius is. I think that if I have that then I will be able to just plug in the other numbers.

- Math: Geometry -
**Joy**, Thursday, February 21, 2008 at 5:55pmThe circumference is equal to (2)(pi)(r).

Since you know the circumference is 16,and you know the value of pi and 2,solve for r.

- Math: Geometry -
**Ms. Sue**, Thursday, February 21, 2008 at 5:56pmCircumference = PI * d

Solve for d and divide by 2.

For more information, check this site.

http://www.mathgoodies.com/lessons/vol2/circumference.html

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