Question

Construct $\overline{AB}$ of length $7.8cm$. Find this, cut off $AC$ of length $4.7cm$ . Measure $\overline{BC}$

Answer 1

Step$1$ Draw a line $l$.Mark a point $A$ on it.

Step$2$ Since length of $AB$ is $7.8$cm, we measure $7.8$cm using ruler and compass.

Step$3$Now keeping compass opened the same length.We keep pointed end at point $A$, and draw an arc on line $l$.So the required line segment is $\overline{AB}=7.8$cm

Step$4$Now, we need to cut of $AC$ of length $4.7$cm.We measure $4.7$cm using ruler and compass.

Step$5$Now keeping compass opened the same length.We keep pointed end at point $A$, and draw an arc on line $l$.

Result:The required line segment $\overline{AC}=4.7$cm