The absolute error is: actual - estimate = 33.2 - 35 = -2.8 that in percent can be found using a rule of three, we say that 33.2 is the 100%, and we find the % for 2.8 33.2 ml -------> 100% 2.8 ml -------> x x =(2.8)(100)/33.2 x = 8.4 then the percent error is 8.4%