SOLUTION: If the radius of the circle x^2+y^2-6x+4y+k=0 find the equation of the circle with center (3,7) and the circumference 8pie

Algebra ->  Circles -> SOLUTION: If the radius of the circle x^2+y^2-6x+4y+k=0 find the equation of the circle with center (3,7) and the circumference 8pie      Log On


   

Question 1194716: If the radius of the circle x^2+y^2-6x+4y+k=0 find the equation of the circle with center (3,7) and the circumference 8pie
Found 3 solutions by ikleyn, josgarithmetic, Alan3354:
Answer by ikleyn(52788) About Me  (Show Source):
You can put this solution on YOUR website!
.
If the radius of the circle x^2+y^2-6x+4y+k=0 find the equation of the circle with center (3,7) and the circumference 8pie
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This post is soup of words that contradict to each other and, taken in whole, make no sense.

Good only to throw it to a garbage bin.



Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
What radius?
Some part or parts of your description are missing or wrong.

The equation for the GIVEN circle, after completing-the-squares is %28x-3%29%5E2%2B%28y%2B2%29%5E2=13-k, so the radius for the given circle is sqrt%2813-k%29.


If you want the a circle with center (3,7) and circumference 8pi, then
%28x-3%29%5E2%2B%28y-7%29%5E2=r%5E2 and you would find this "r" according to
2pi%2Ar=8pi
2r=8
r=4
and the equation then is %28x-3%29%5E2%2B%28y-7%29%5E2=4%5E2. This IS NOT RELEVANT to your given equation.

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
circumference 8pie
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No pie in math problems, unless it's a pie chart.
Use the Greek letter pi.