ECZ 2020 · O-Level Paper 1 — Approximations
Chiyalwa estimated the length of a string as 15 cm. The true length of the string was 14.6 cm. Find the absolute error in Chiyalwa's estimate.
- A. 0.6 cm
- B. 29.6 cm
- C. 0.4 cm
- D. 0.04 cm
Verified working — step 1
Absolute error asks one thing: how far the estimate sits from the true value, as a positive distance.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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