1. Volume & Surface Area

How would I solve this problem?

You were asked to design a sphere with a volume of 128cm3. What should the diameter of the sphere be?

Thanks.

2. Originally Posted by andi01
How would I solve this problem?

You were asked to design a sphere with a volume of 128cm3. What should the diameter of the sphere be?
Thanks.
Hi andi.

The volume of a sphere is found by the formula $V = \frac{4}{3}\pi r^3$ where $r$ is the radius of the sphere. Remember, radius is twice the diameter.

Therefore we get:

$128 = \frac{4}{3}\pi r^3$

$r^3 = \frac{96}{\pi}$

I'm sure you can work this out now