## anonymous 5 years ago how do you do volume?

1. anonymous

I don't know. That is a hard thing to do. What is "doing volume" mean?

2. anonymous

Area times height.

3. anonymous

area times height do you have it on your book or note?

4. anonymous

Ie, a cube is s^3, a cone is 1/3pir^2 h Etc

5. anonymous

yes, volume is generally cross sectional area x height.

6. anonymous

lenghtxwidthxheight

7. anonymous

and what in case of cylinder. cylinder doesn't have length and width???

8. anonymous

The volume of a cylinder is pi r^2 h. It's still the base times the height.

9. anonymous

no, it ain't base times the height. the cross section of cylinder is a circle. so the area of circle = $\pi r ^{2}$ and then multiplied with height = $\pi r^{2}h$

10. anonymous

Which is actually exactly what I just said. Pi r^2 h.

11. anonymous

The base is the same as the cross section.