The length, L, of a steel rod is 8.3m, correct to 1 decimal place - OCR - GCSE Maths - Question 2 - 2017 - Paper 1

To determine the error interval for the length L, we take into account that the measurement is correct to 1 decimal place. This means that the actual value of L can be 0.05 more or less than the stated value. Therefore:

Given the stated length is 8.3 m:

• The lowest possible value (L_min) is 8.3 - 0.05 = 8.25 m
• The highest possible value (L_max) is 8.3 + 0.05 = 8.35 m

Thus, the error interval for the length L is:

$8.25 < L < 8.35$