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%
E
9.00%
Verified Correct Answer: C.
Step-by-Step Mathematical Solution
%error = \(\frac{1.21 - 1.12}{1.21} \times 100%\)
= \(\frac{9}{121} \times 100%\)
= 7.44%
Source: Myschool Past Questions Archive (Record #22606)