Added error propagation to the radius ratios, both R2/R1 and R1/R2 which are slightly different because of the function multiplier (R1/R2 vs R2/R1)
Added error propagation to the radius ratios, both R2/R1 and R1/R2 which are slightly different because of the function multiplier (R1/R2 vs R2/R1)

savvytruffle/cauldron,savvytruffle/cauldron