nastacia2004 nastacia2004
  • 13-05-2021
  • Mathematics
contestada

find the radius of the circle with center (2,2) that passes through (-9,-4)

Respuesta :

goddessboi goddessboi
  • 13-05-2021

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

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