Can't really help you if I can't see the equations, mind sending a pic or typing them in?
Answer:
the third one
Step-by-step explanation:
The equation for a circle is as followed:

where the center of the circle is at (h,k) and the radius of the circle is r.
We are given (h,k) and need to find the radius. To do so, we can use the distance formula to find the distance from the center to the point on the circle:

Plug in the two points:



If the distance from the center to the edge of the circle is the square root of 117, then r^2 = 117.
The answer is:
there are various possible answers ( up till infinity)
i'll give you five possible ones:
1) x = -16 and y = 1
2) x = -11 and y = 5
3) x = -1 and y = 13
4) x = 4 and y = 17
5) x = 104 and y = 97....
Answer:
Step-by-step explanation:
That will be the perimeter. Perimeter is the distance around. Add all five sides, be sure to put the unit behind.
I need more information to help any further.