ECZ 2019 · O-Level Paper 1 — Approximations
The length of a piece of wire is measured as 4.5 cm. Calculate the tolerance.
- A. 0.1cm
- B. 0.5cm
- C. 0.45cm
- D. 0.05cm
Verified working — step 1
Tolerance is the WIDTH of the band the true length can lie in - the upper limit minus the lower limit.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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