Question 71710
find an equation of the circle with center (7, -2) and radius square root of 5
:
The standard form of a circle is: {{{highlight((x-h)^2+(y-k)^2=r^2)}}}, where (h,k)=center and r=radius.
(h,k)=(7,-2) {{{r=sqrt(5)}}}
{{{(x-7)^2+(y-(-2))^2=(sqrt(5))^2}}}
{{{highlight((x-7)^2+(y+2)^2=5)}}}
Happy Calculating!!!!