PDA

View Full Version : E=l(r-r)/2r

Welshdodds
Oct 16, 2010, 06:43 PM
Make r subject
Unknown008
Oct 16, 2010, 11:56 PM
1. Cross multiply
2. Distribute the L(R-r)
3. Bring all the terms in R on one side and all the others on another side of the equal sign.
4. Factorise R.
5. Divide by the coefficient of R.

Post what you get! :)