A student found the approximate value of 0.02548 correct to two places of decimal instead
MATHEMATICS
WAEC 1997
A student found the approximate value of 0.02548 correct to two places of decimal instead of two significant figures. Find the percentage error.
- A. 0%
- B. 131/3%
- C. 15 5/13%
- D. 20%
Correct Answer: D. 20%
Explanation
0.02548 \(\approxeq\) 0.03 (to 2 decimal places)
0.02548 \(\approxeq\) 0.025 (2 sig. figs)
Error = 0.03 - 0.025
= 0.005
% error = \(\frac{0.005}{0.025} \times 100%\)
= 20%
Post an Explanation Or Report an Error
If you see any wrong question or answer, please leave a comment below and we'll take a look. If you doubt why the selected answer is correct or need additional more details? Please drop a comment or Contact us directly. Your email address will not be published. Required fields are marked *