I’m having a lot of trouble on this and could use because i was absent when we learned this? !

21, 35

Step-by-step explanation:

So you take 3.14 for Pi/π

And you circumference is 65.94

You know that circumference = Pi*Diameter

So you go backwards which is

65.94/3.14

= 21

Ending up with your diameter being 21

Next circumference is 109.9, so you do the same thing going backwards.

109.9/3.14

= 35

So your diameter is 35

the first one is x^2+2x+2

the second one is x^2+4

the last one is x^2-4x+8