Mathematics for IGCSE & O level - Limits Of Accuracy (Section 3 - No. 12)

A height is given as 4.7 m to 1 decimal place. What is the lower bound of the actual height?

4.6 m

4.65 m

4.70 m

4.75 m

The measurement is to 1 d.p. Therefore it's between 4.65 m to 4.75 m. 4.65 is the lower bound.