Answer:
√157 units or about 12.53 units
Step-by-step explanation:
Equation of circle: (x-h)²+(y-k)²=r²
Center: (h,k) -> (2,2)
Equation so far: (x-2)²+(y-k)²=r²
Plug in (-9,-4) to find r: (-9-2)²+(-4-2)²=r² -> 121+36=r² -> 157=r² -> √157=r
Therefore, the radius of the circle is √157 units or about 12.53 units
