Mathematics for IGCSE & O level - Limits Of Accuracy (Section 1 - No. 5)
A piece of red string is 35.2 cm long to the nearest millimetre, and a piece of blue string is 12.6 cm long to the nearest millimetre. What is the minimum total length of the two pieces laid end to end?
47.7 cm
47.75 cm
47.8 cm
48.0 cm
คำอธิบาย
The minimum total length is calculated by adding the lower bounds of each length. 35.15 + 12.55 = 47.7 cm