Help! Percentage Uncertainty

[Roden]

i need some help with this problem,

i have to work out the percentage uncertainty for

rho = (R * A) / L

now the % uncertainty for A is so low it doent come into account but i have a %U of 3.26% for R, and a %U of 0.43% for L

what do i do to find the %U for Rho??

thanks guys

roden

[rja211077]

go here and scroll down a bit
http://spiff.rit.edu/classes/phys273/uncert/un cert.html