SOLUTION: write the standard form of the equation of the circle with the radius sqrt30 and whose center is the origin

SOLUTION: write the standard form of the equation of the circle with the radius sqrt30 and whose center is the origin

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Question 468795: write the standard form of the equation of the circle with the radius sqrt30 and whose center is the origin
Answer by Theo(13342) (Show Source): You can put this solution on YOUR website!
the formula for a circle is:
(x-h)^2 + (y-k)^2 = r^2
you have r = sqrt(30) so r^2 = 30
(h,k) is the center of the circle.
since this is the origin, the center of the circle is at (0,0).
this makes h = 0 and k = 0.
your formula becomes:
x^2 + y^2 = 30

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