Thread: rearranging equation

hi how do I rearrange this equation to give me the value of J

G= pi x D^2/ 4JL

Thanks

Originally Posted by scarface1

hi how do I rearrange this equation to give me the value of J

G= pi x D^2/ 4JL

Thanks

$\displaystyle G= \pi \times D^2/ 4JL=\frac{\pi D^2}{4JL}$

Now multily both sides by $\displaystyle 4JL$ and try to solv it for J

i dont quite understand which two sides im supposed to multiply :S
could you possibly explain this step by step please

Thank you so much

If i'm reading the question correctly, it's $\displaystyle G=\frac{\pi(D^2)}{4JL}$

So;

$\displaystyle \pi(D^2)=4GJL$

$\displaystyle \frac{\pi(D^2)}{4GL}=J$

You would cross multiply and solve for $\displaystyle J$