Answer:
Step-by-step explanation:
you have a right triangle with 2 known values for legs
C^2=a^2+b^2
a=3, b=6
C^2=3^2+6^2=9+36=46
c==3
first choice
4.67 would be a rounded answer. Really it's 4.666666666666666666 (the 6 go on forever) but we can't write that out.