**A sphere**is nothing but a three dimensional circle. If you can imagine a smooth ball, suspended in mid-air, perfectly round... then you get a sphere.

All of you have seen spheres...They're everywhere!

If you've seen the solar system, you've seen spheres..If you've played ping pong, or golf or soccer...even basketball or cricket and hockey...you've seen spheres. If you are a housewife, you'll see spheres in the fruit basket... And if you are in kindergarten...they're in your abacus set!

Spheres are very common shapes, one encounters in everyday life.

This instructable will show you "how" and "why" to calculate the volume of a sphere.

I have explained every concept and every formula in great detail. Also , I have filled up this instructable with a lot of practical examples which will help you understand me

## Step 1: Your Toolbox

1) A good ruler.(Or if you have a good vernier calliper in the local store, that would be excellent!).

2) A long piece of thread( Extremely useful in finding the circumference!)

2) A good and reliable calculator.

3) A pencil or marker of some sort.

4) Paper on which you can do your calculations.

**Signing Up**

Thank you for this Instructable. It is simple and easy to follow. I was searching all over this website in order to find ways to figure out how to build a frame of a 10 foot sphere and your explanation on the formulas have helped me out in to figuring out or seeing the mathematics portion. Mathematics is not my strongest skill, I am more on the artistic and design side. I've learned that if I can think of it, I can build it. At least most of the time. But I will never disregard that in order to be precise that one, even as an artist, has to have a strong foundation in basic mathematics, especially now that I am working with fractals. Actually, I always have worked with fractals but I never even knew that until it was pointed out to me that I was using fractals for some of my art and designs. Since I learned about fractals I've been more fascinated by their use. Anyhow, thank you again for your Instructable.

not area = pi X radius X radius.

-PKT

ora sphere.