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What is the radius of the circle who’s equation is x^2 + y^2 = 9

What is the radius of the circle who’s equation is x^2 + y^2 = 9
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What is the radius of the circle who’s equation is x^2 + y^2 = 9

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User Timtech
by
8.0k points

1 Answer

4 votes

Answer:

r=3

Explanation:

  • The equation of a circumference is
    (x-a)^2+(y-b)^2=r^2.
  • Then , in this case
    r^2=9, and then to know the value of r we just simply have to calculate the square root of 9, which is 3.
answered
User Shawon Kanji
by
7.8k points
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