Question on: WAEC Mathematics - 1990
While doing his physics practical, Idowu recorded a reading as 1.12cm instead of 1.21cm. Calculate his percentage error
A
1.17%
B
6.38%
C
7.44%
D
8.035%
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Correct Option: C
%error = \(\frac{1.21 - 1.12}{1.21} \times 100%\)
= \(\frac{9}{121} \times 100%\)
= 7.44%
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