Mathematics

Instead of recording the number 1.23cm of the radius of a tube, a student recorded…

Instead of recording the number 1.23cm of the radius of a tube, a student recorded 1.32cm. Find the percentage of error, correct to one decimal place.
  • A.
    6.8%
  • B.
    7.3%
  • C.
    9.6%
  • D.
    14.4%
  • E.
    15.4%
Correct Answer: Option B
Explanation
% error =

error/exact

x

100/1
=

0.09/1.23

x

100/1

= 7.3%