uppercasethree uppercasethree

11-12-2020
Mathematics

contestada

could use some help with answering this. :)

could use some help with answering this class=

Respuesta :

triciareiser triciareiser

11-12-2020

Answer: r = 2

Step-by-step explanation: The general equation is:

(x-a)² + (y-b)² = r²

where (a,b) = coordinates of the center, and r = radius

x² + y² = 4 is the same as

(x-0)² + (y-0)² = 2²

So, the center is at (0,0) and the radius is 2.

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