WAEC - Mathematics (1990 - No. 8)
While doing his physics practical, Idowu recorded a reading as 1.12cm instead of 1.21cm. Calculate his percentage error
1.17%
6.38%
7.44%
8.035%
9.00%
Paskaidrojums
%error = \(\frac{1.21 - 1.12}{1.21} \times 100%\)
= \(\frac{9}{121} \times 100%\)
= 7.44%