ECZ 2019 · GCE Paper 1 — Approximations
The length of a piece of wire is 15.2 cm, correct to 1 decimal place. What is the relative error of the length of the piece of wire?
- A. 1152
- B. 11520
- C. 1304
- D. 176
Verified working — step 1
The absolute error is half the smallest unit: 0.1 ÷ 2 = 0.05 cm. Relative error = 0.0515.2= 51520= …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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