your right Step-by-step explanation:
This would be called an ANGLE.
Hopefully this helps!
For 64 it’s A. , C. , D. and for 3 it’s D. and F
Nothing can go into 83 so of you square root it you will get a decimal so the nearest whole number You would get is 9 because 9*9=81 and that's the closet that you will get to 83