Error multiplication

In measuring the sides of a rectangle errors of 5% and 3% in excess are made. Find the error percent in the calculated area .

Correct answer:

r3 =  8.15 %

Step-by-step explanation:

r1=100%+5%=1+1005=1.05 r2=100%+3%=1+1003=1.03  S = ab S2 = (a r1) (b r2) = r1 r2   (a b) = r1 r2 S  r3 = 100   SS2S r3 = 100   Sr1 r2 SS  r3=100 (r1 r21)=100 (1.05 1.031)=8.15%



Did you find an error or inaccuracy? Feel free to write us. Thank you!







Tips for related online calculators
Our percentage calculator will help you quickly and easily solve a variety of common percentage-related problems.

You need to know the following knowledge to solve this word math problem:


 
We encourage you to watch this tutorial video on this math problem: video1

Related math problems and questions: