What is the equation of the circle with a center at (2 ,1 ) and a radius of 3 ?
1 Answer
Jan 26, 2016
Explanation:
The standard form of a circle with a center at
(x-h)^2+(y-k)^2=r^2
Since the center is
{(h=2),(k=1),(r=3):}
Thus, the equation of the circle is
(x-2)^2+(y-1)^2=3^2
This simplifies to be
(x-2)^2+(y-1)^2=9