What is the length of side MO?
O A. 18 cm
OB. 5 cm
C. 11 cm

Answer:
5
Step-by-step explanation:
Using the pythagorean theorem,
[tex]13^2=(MO)^2+12^2\\\\169 - 144 = (MO)^2\\(MO)^2=25\\\\MO = 5[/tex]