How do I answer this

Question

A family buys an invisible fence for their pet dog. The fence reaches up to 144 ft in any direction write a formula for the model of the range of the electric fence If the house is located at (12,-3)

Answer 1

I guess you would say it is a circle centered at (12, -3) with a radius of 144

 

(x-12)² + (y+3)^{2 =} 20736

 

(x-h)² + (y-k)² = r²

 

This is a circle centered at (h, k) with a radius of r