How do you write an equation of a circle with center at (5,10), r=7?

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How do you write the general form given a circle that passes through the given points. P(-2, 0),...
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Answer 1 · 2017-03-17T03:29:20

#(x-5)^2 + (y-10)^2 = 49#

Standard equation of a circle: #(x-h)^2 + (y-k)^2 = r^2#, where #"center": (h, k), r = "radius"#

#r = 7#, so #r^2 = 7^2 = 49#
#h = 5, k = 10#

So: #(x-5)^2 + (y-10)^2 = 49#