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anonymous
 one year ago
Find the standard form for the equation of a circle
(xh)^2 + (yk)^2 = r^2 with a diameter that has endpoints (1, 4) and (5, 0).
i just need to find r
anonymous
 one year ago
Find the standard form for the equation of a circle (xh)^2 + (yk)^2 = r^2 with a diameter that has endpoints (1, 4) and (5, 0). i just need to find r

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0if you find the length of a diameter and divide it by 2 .you will find it's radius .

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0well i got (2,2) for h,k do i just plug in the equation to find r?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0well.you only want to find r so you should find the length of a diameter with using this formula: \[D=\sqrt{(y _{2}y _{1})^2+(x _{2}x _{1})^2}\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0are you sure? (04)^2+(5(1))^2=16+36=52 D=sqrt52=sqrt4*13=2*(sqrt13)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0opps i switched them
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