Final answer:
The length of MN is calculated by subtracting the length at point M (1.9 cm) from the length at point N (6.9 cm), which results in 5.0 cm, measured to the nearest tenth of a centimeter.
Step-by-step explanation:
To measure the length of MN to the nearest tenth of a centimeter, you need to find the difference between point N and point M. This can be done by subtracting the length at point M (1.9 cm) from the length at point N (6.9 cm).
Here is the calculation:
Length of MN = N - M
Length of MN = 6.9 cm - 1.9 cm
Length of MN = 5.0 cm
Therefore, the length of MN measured to the nearest tenth of a centimeter is 5.0 cm.
Measuring length involves determining the distance between two points or the extent of an object in one dimension. The unit of measurement for length varies depending on the system used.