Mathematics for IGCSE & O level - Limits Of Accuracy (Section 1 - No. 31)
What is the upper bound of the difference between the lengths of the two strings, where a piece of red string is 35.2 cm long and a piece of blue string is 12.6 cm long, both measured to the nearest millimetre?
22.5 cm
22.6 cm
22.65 cm
22.7 cm
Vysvětlení
The upper bound of the difference is calculated by subtracting the lower bound of the shorter length from the upper bound of the longer length: 35.25 - 12.55 = 22.7cm