Percentages errors - Jamb Mathematics Past Questions and Answers

Question 11:

• JAMB 1992

The radius of a circle is given as 5cm subject to an error of 0.1cm. What is the percentage error in the area of the circle?

A. \(\frac{1}{25}\)
B. \(\frac{1}{4}\)
C. 4
D. 25

Question 12:

• JAMB 1995

The length of a notebook 15cm, was measured as 16.8cm. Calculate the percentage error to 2 significant figures.

A. 12.00%
B. 11.00%
C. 10.71%
D. 0.12%

Question 13:

• JAMB 1995

The length of a notebook 15cm, was measured as 16.8cm. Calculate the percentage error to 2 significant figures.

A. 12.00%
B. 11.00%
C. 10.71%
D. 0.12%

Question 14:

• JAMB 2010

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%