# Solve for r: h^2+(pie)r=K

1. Aug 28, 2011

### davie08

1. The problem statement, all variables and given/known data

solve for r: h^2+(pie)r=K

2. Relevant equations

not sure

3. The attempt at a solution

r=K-h^2/pie

2. Aug 28, 2011

### ArcanaNoir

This is correct if you mean r=(k-h^2)/(pi)

$$r=\frac{k-h^2}{\pi}$$

 no e in pi... ;)

3. Aug 28, 2011

### Ray Vickson

This is incorrect: you have written $$r = K - \frac{h^2}{\pi},$$ at least when read according to *standard rules*. If you mean that
$$r = \frac{K - h^2}{\pi} ,$$ then you need to use brackets: r = (K - h^2)/pi.

RGV