2007-04-11 08:32:18 · 8 answers · asked by bekah_2009 2 in Science & Mathematics ➔ Mathematics
x^2 + y^2 = 25
2007-04-11 08:35:52 · answer #1 · answered by Jhykyy 2 · 0⤊ 0⤋
The standard form of a circle is:
(x - h)^2 + (y - k)^2 = r^2
Where (h, k) is the center and r is the radius. But the center is (0, 0) and the radius is 5.
(x - 0)^2 + (y - 0)^2 = 5^2
x^2 + y^2 = 25
2007-04-11 15:35:26 · answer #2 · answered by Bhajun Singh 4 · 2⤊ 0⤋
The full equation for a circle is:
(x - h)² + (y - k)² = r²
h and k are the x and y coordinates for the center of the circle, and in this example they are both zero
r is the radius, in this case 5
So the equation would be:
x² + y² = 25
2007-04-11 15:39:48 · answer #3 · answered by eviljebus 3 · 1⤊ 0⤋
x^2 + y^2 = 25
2007-04-11 15:34:20 · answer #4 · answered by charlesthesportsfan 2 · 0⤊ 0⤋
x^2 + y^2 = 25
2007-04-11 15:34:32 · answer #5 · answered by Jeffrey O 3 · 0⤊ 1⤋
x² + y² = 25.
More generally, the equation of a circle with
centre (h,k) and radius r is
(x-h)² + (y-k)² = r².
2007-04-11 15:37:16 · answer #6 · answered by steiner1745 7 · 1⤊ 1⤋
the equation for a circle that is centered at the origin is x2 + y2 = r2, where r is the radious.
thus the equation of this circle is x2 + y2 = 5^2 = x2 + y2 = 25
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added note. in my answer to you about line with slope of -13, i said the line went from upper right to lower left. i meant to say it goes from upper left to lower right, becasue it is a negative slope. sorry for any confusion.
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2007-04-13 11:08:31 · answer #7 · answered by Anonymous · 0⤊ 0⤋
what do you want the equation for the area or circumference?
2007-04-11 15:35:58 · answer #8 · answered by tailchain814 2 · 0⤊ 4⤋