Instead of recording the number 1 23cm of the r... - WAEC Mathematics 1989 Question
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%
correct option: b
% error =
error/exact x
100/1
=
0.09/1.23 x
100/1 = 7.3%
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