The equation of a circle, centered at the origin, is x 2 + y 2 = r 2 , where is the radius and is any point on the circle.
Equation of a Circle: The standard form of the equation of a circle is ( x − h ) 2 + ( y − k ) 2 = r 2 where is the center of the circle and is the radius. Radius: The radius is the distance from the center of a circle to any point on the edge.
Now when as for the center radius form of this equation. That's it yeah it's already in there nowMoreNow when as for the center radius form of this equation. That's it yeah it's already in there now you could show the X and the y value of your Center. In other words the h.
( x − a ) 2 + ( y − b ) 2 = r 2 is used to write the equation of the circle when you know the centre and the radius.
First you need to know that the equation for a circle is (x-a)^2 + (y-b)^2 = r^2 where the center is at point (a,b) and the radius is r. so for instance (x-2)^2 + (y-3)^2 = 4 would have the center at (2,3) and have a radius of 2 since 4 = 2^2.
So 16 squared. So when you subtract a negative it's like adding the opposite. So that's really likeMoreSo 16 squared. So when you subtract a negative it's like adding the opposite. So that's really like X plus 2 squared and Y minus 0 is really just like Y.
And once for Y. Alright. So that's the difference between completing. The square for a quadratic.MoreAnd once for Y. Alright. So that's the difference between completing. The square for a quadratic. And for a circle. In a circle the Y terms are also squared. So we complete the square twice.
The equation of a circle of radius r and centre the origin is x2 + y2 = r2 .