Answer:
13
Step-by-step explanation:
you are given point A with co-ordinate(0;12) and B (5;0)
length=[tex]\sqrt{(yb-ya)^{2} +(xb-xa)^{2} }[/tex]
=[tex]\sqrt{(0-12)^{2}+(5-0)^{2} }[/tex]
=[tex]\sqrt{(-12)^{2}+(5)^{2} }[/tex]
=[tex]\sqrt{144+25}[/tex]
=[tex]\sqrt{169}[/tex]
=13
