i would like some hlep on this question

V = \frac13 \pi r^2 h

Multiply both sides by 3:

V\times 3 = \frac13 \pi r^2 h \times 3

3V = \pi r^2 h

Divide by pi on both sides:

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

Divide by r^2 on both sides:

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

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

Remember that once to try to remove something from one side, be sure to do the same thing on the other side. :)

The main thing is, never spell {\pi} as 'Pie'. It's Pi

This is a Greek letter, not a pastry.

The main thing is, never spell {\pi} as 'Pie'. It's Pi

This is a Greek letter, not a pastry.

If only it was a pastry, more students would be interested in it:p.

I've also heard that the pronunciation is "pee" not "pie" for \pi, sine we say "phee" not "fie" for \phi

If only it was a pastry, more students would be interested in it:p.

I've also heard that the pronunciation is "pee" not "pie" for \pi, sine we say "phee" not "fie" for \phi

We have people already confusing it with pastry, let alone if we were to pronounce it pee. :D

(Of course, this does come in handy if you're actually making a pie, which would be round.)