make r the subject of v=4/3 pie r^3

Simply rearrange to get r = ....

What are you stuck on?

Rearrange to get all terms in r (i.e: the r^3 term, in this case) on one side, and everything else on the other side.

Given $r^3 = \cdots$, then taking the cube root of both sides will give you an expression for r.

Divide both sides by Pie, then multiply both sides by 3/4. finally cube root.

can you show me how

I'll work through a different example to show you the ideas involved.

The volume of a cone is $V = \frac{1}{3} \pi r^2 h$

Multiply both sides by 3 to get rid of the 1/3: $3V = \pi r^2 h$

Divide both sides by pi: $\frac{3V}{\pi} = r^2 h$

Divide both sides by h: $\frac{3V}{\pi h} = r^2$

Take the square root of both sides: $\sqrt{\frac{3V}{\pi h}} = r$

Your example is very similar.

is my answer the cubed root of 3v/4 pie

$r = \sqrt[3]{\frac{3V}{4\pi}}$

There is an answer which shows "R= Cube Root of (6V/PI) / 2" in an assessment book. Does anyone know how the author went to this final answer instead of what was given by James H. above?

Any idea?

Show working pls

make r the subject of v=4/3 pie r^3 need some help guys