How Do I Correctly Rearrange Formulas Involving Pi and Exponents?

[Dooga Blackrazor]

Hey I'm new to the forums. *Claps applauding himself* Anyway exams are coming with Math on Wednesday and I'm just going over stuff. My problem right now is with rearranging.

V = 1/3(pie)(r)^2h ; h

The 1/3 is a fraction multipled by pie *ed by r(squared) * h. Finding for H.

I came up with squareroot(3V/(pie)r = h
If tats correct I'm wondering why when removing the r^2 by using squareroot that it doesn't affect the rest of the equation on that side.

Next question:

V = 4/3(pie)r^3 ; pie

V / 4/3R^3 = pie (That is what I got)

Also I see people using some sort of program to write equations out is there anywhere to download this thing?

**EDIT** My apologies I just noticed the homework help zone after I posted lol.

 

[himanshu121]

It is LaTeX
$$V=\frac{\pi r^2h}{3}$$
I wonder how u got squareroot for it
it should be

$$h=\frac{3V}{\pi r^2}$$

And for next it would be
$$\pi=\frac{3V}{4r^3}$$

For Learning about LaTeX visit:https://www.physicsforums.com/showthread.php?s=&threadid=8997

 

[Dooga Blackrazor]

Thanks a lot

I wasn't thinking correctly. Previous questions he was getting us to remove squared things by squareroot. I was thinking it was supposed to be done in terms of eliminating the r^2 rather than just dividing by it. Silly me.