ECZ 2018 · GCE Paper 1 — Approximations
A piece of timber measures 5.25 cm long. Calculate the relative error of the measurement.
- A. 1105
- B. 1525
- C. 11050
- D. 12100
Verified working — step 1
The measurement 5.25 cm is given to 2 decimal places, so the absolute error is half of 0.01, i.e. 0.005 cm. Relative error = absolute error ÷ measurement = 0.0055.25= 55250= …The full step-by-step working and final answer are included with Premium — checked against ECZ marking standards.
Original examination question © Examinations Council of Zambia. Worked solution and commentary © G12 Titan — not to be reproduced without permission.
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