Question

Line segment $\overline{AB}$ is alinged along the ruler as shown below $.$ Write its length $.$

Answer 1

In the above figure$,$ Point $A$ is markest at $3$ units which is the starting point$.$

Point $B$ is marked at $9$ units which is the end point$.$

Length of line segment $\overline{AB}=9-3$

$\overline{AB}=6cm$

Hence$,$ the length of line segment $\overline{AB}$ is $6cm.$