Help me please with this math question! giving brainliest to the correct answer

Answer:
a) Circle 1: 3.14275
Circle 2: 3.1425
Circle 3: 3.143
b) [tex]\frac{C}{d}=\pi[/tex]
c) C= d • [tex]\pi[/tex]
Step-by-step explanation:
a) you just divide the circumference over the diameter
Hope this helps!