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anonymous

  • one year ago

Which of the following is the equation of a circle whose center is at the origin and whose radius is 5 ? A.) x(squared) + y(squared) =√5 B.) x(squared) + y(squared) = 5 C.) x(squared) + y(squared) = 10 D.) x(squared) + y(squared) = 25

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  1. anonymous
    • one year ago
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    Are you familiar with the standard form equation for a circle?

  2. anonymous
    • one year ago
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    \[(x-a)^2+(y-b)^2=r^2\]

  3. anonymous
    • one year ago
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    Not really

  4. anonymous
    • one year ago
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    Where (a, b) is the coordinate of the circle's centre, and r is the radius

  5. anonymous
    • one year ago
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    your going to have to help me with it

  6. anonymous
    • one year ago
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    Well, you just need to plug in the information given from the problem.

  7. anonymous
    • one year ago
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    The circle is centered at the origin so \[(a,b) = (0,0)\]

  8. anonymous
    • one year ago
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    The radius is 5.

  9. anonymous
    • one year ago
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    \[(x -0)^2 + (y-0)^2 = 5^2\]

  10. anonymous
    • one year ago
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    how do i find x, and y?

  11. anonymous
    • one year ago
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    You're not trying to find x and y. You are asked to provide the equation of the circle in terms of x and y.

  12. anonymous
    • one year ago
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    So it would be D?

  13. anonymous
    • one year ago
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    Correct

  14. anonymous
    • one year ago
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    i accendtly typed the radius wrong its supposed to be √5. would it still be 25?

  15. anonymous
    • one year ago
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    @math1234

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