By the law of cosines, the angle

satisfies

which reduces to

which converts to approximately 77 degrees (this can be done my multiplying by 180 and dividing by pi).
Answer:
she ate 4 slices
Step-by-step explanation:
Perimeter is , or around 63.89 in.
If you meant that the area was 225 in²:
Perimeter is 60 in
Answer:
I think it's
Step-by-step explanation:
73.70×3
221.1