Answer:

Step-by-step explanation:
General Equation of circle is
----------- (1)
Here

Radius r is distance from origin (x1, y1) to point (x2, y2)=(-3, -6)




Substituting values in equation (1)


Answer:
7
Step-by-step explanation:
Substitution then simplify
Answer:
Step-by-step explanation:
m = 500 - 10d
Answer:
120 feet of fence is enough for a circle 38 feet in diameter