Construct a line segment $PQ$ of length $6.2 cm$ and cut off $PS$ of length $4 cm$. Measure the length of $SQ$.

Construct a line segment $AB = 7.2 cm$. From this, cut off $AC = 6 cm$. Measure $CB$. Now cut off $AD=BC$. Find the measure of $DC$.

Construct a line segment $PQ$ whose length is equal to the sum of the lengths of $AB$ and $CD$, where $AB = 2.9 cm$ and $CD = 4.1 cm$.

Length of $AB$ is $4.3 cm$. Construct $PQ$ such that the length of $PQ$ is twice that of $AB$.

 It is given that $AB = 2.4 cm$. Construct $XY$ such that $XY=3AB$.

Given the length of $AB=8.6 cm$ and the length of $CD=4.7 cm$. Construct a line segment $XY$ such that $XY = AB - CD$.

Given that $PQ = 7.5 cm$ and $RS = 3.4 cm$. Construct a line segment $AB$ such that the length of $AB$ is equal to the difference of the lengths of $PQ$ and $RS$.

Draw a line segment $AB 4 cm$ long and construct the perpendicular bisector of $AB$ using a ruler and a pair of compasses.

Draw a line segment $6 cm$ long and divide it into $4$ equal parts using a ruler and a pair of compasses.