explain how you could use the construction tool or a compass and straightedge to create a line segment twice as long as AB

Use a compass to measure the length of AB.

Draw an arc from point B (or point A) with that distance.

Extend line AB through that arc and label the intersection as point C.

AC is twice the length of AB.

ruth is 6 years old

step-by-step explanation:

6 + 24 = 30,   so 6/30 = .2  

if you do 1/5 it also equals .2, so that is the answer.