A student measures a piece of rope and found th... - JAMB Mathematics 2010 Question
A student measures a piece of rope and found that it was 1.26m long. If the actual length of the rope was 1.25m, what was the percentage error in the measurement?
A
0.25%
B
0.01%
C
0.80%
D
0.40%
correct option: c
Actual length of rope = 1.25m
Measured length of rope = 1.26m
error = (1.26 - 1.25)m - 0.01m
Percentage error = (\frac{error}{\text{actual length}}) x 100%
= (\frac{0.01}{1.25}) x 100%
= 0.08%
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