1. The problem statement, all variables and given/known data My homework question says: the uncertainty in length 1 is +/- 0.1 and in length 2 is +/- 0.1 : calculate the percentage uncertainty in V where V L1-L2 is 30 2. Relevant equations V= (1/(L1-L2))^0.5 where L is the length 3. The attempt at a solution So what I did was add the two uncertainties to get +/- 0.2 I then worked out percentage uncertainty by doing 0.2/30 *100% and then I multiplied my answer by 0.5 since it is being square rooted. Is this correct or have I made a mistake somewhere in my method?