ECZ 2018 · GCE Paper 1 — Approximations

A piece of timber measures 5.25 cm long. Calculate the relative error of the measurement.

Verified working — step 1

5.25 cm is written to 2 decimal places, so the smallest unit is 0.01 cm - and the absolute error is HALF of that.

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Original examination question © Examinations Council of Zambia. Worked solution and commentary © G12 Titan — not to be reproduced without permission.

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