Answer :

Question:

Find the length of ab​

Solution:

The bisector of a segment is the straight line perpendicular to said segment drawn by its midpoint. According to this, we get that

AR = RB

That is:

9 = AR = RB

now, the segment AB is

AB= AR + RB = 2(9)= 18

So that, we can conclude that the correct answer is:

[tex]18[/tex]

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