Question

What is A=r/2L when solving for L?

Answer 1

A=r/2L 

L=r/2A would be your answer

Answer 2

$A= \dfrac{r}{2l}$ $\text{Equation}$ 

$A= \dfrac{rl}{2}$  $\text{Simplify Equation}$ 

$A*2=rl$  $\text{Multiply both sides by 2}$ 

$2A=rl$  $\text{Regroup terms}$ 

$\dfrac{2a}{r}=l$  $\text{Divide both sides by r}$ 

$l=\dfrac{2a}{r}$  $\text{Solution}$