Posted by mazoe on Monday, February 27, 2012 at 3:50am.
1. x^2+2x+(2/2)^2+Y^2-8y+(-8/2)^2=-5+1+16.
X^2+2x+1 + Y^2-8y+16 = 12.
(x+1)^2 + (y-4)^2 = 12.
(x-h)^2 + (y-k)^2 = r^2.
C(h,k).
C(-1,4).
r^2 = 12.
r = 2*sqrt3 = 3.46.
Related Questions
maths - Given that the equation of the circle is x^2+y^2+2x-8y+5=0 (i)find the ...
maths - 1) Circle centre (7,-2) passes through (-2,10). Calculate radius and ...
calc - standard equation of circle concentric with X^2+Y^2-2X-8Y+1=0 and tangent...
maths - given the following equation for a circle x^2-8x+y^2+4y+11=0 find its ...
maths - the circle is given by the equation x^2+y^2+8x-7/2y=0 find (i)...
maths - the equation of the circle is x^2+y^2+2x-8y-1=0. Find the coordinates of...
math - can u help this the qustion is : A circle passes through the points (1,4...
steev - can u help this the qustion is : A circle passes through the points (1,4...
Algebra - find the center (h,k) and radius r of the circle with the given ...
Algebra - find the center (h,k) and radius r of the circle with the given ...
For Further Reading
