pre calc
posted by kim .
find the equation of a circle with.
Center (0,0), radius 2

What is
x^2+y^2=4 
how will that help me solve the problem
Respond to this Question
Similar Questions

calc
standard equation of circle concentric with X^2+Y^22X8Y+1=0 and tangent to line 2XY=3 Complete the squares to find the center of the circle. X^2+Y^22X8Y+1=0 (x1)^2+(y4)^2  16 =0 The center is (1,4) and the radius for the given … 
Math
The points (4, –5) and (– 4, 1) are endpoints of a diameter of a circle. (a) Find the center of the circle. (b) Find the length of the radius of the circle. (Note that this is a distance.) Give the exact answer. Show work. (c) … 
PreCalc
Determine the center and the radius of the following circle: x^2+y^2+6x4y5=0 I got for the radius 3(sqrt2) I got for the center (3,2) Can you please tell me if I am correct? 
Pre Calc
Complete the square to find the center and the radius of the circle: 3x^2+3y^212x+24y+15=0 
Pre Calc
Complete the square to find the center and the radius of the circle. 3x^2+3y^212x+24y+15=0 
PreCalc
True or False: •Every equation of the form X^2+y^2+ax+by+c=c •The radius of the circle x^2+y^2=9 is 3 •The center of the circle (X+3)^2+(y2)^2=13 is (3,2) 
NEED MAJOR HELP! *QUADRATIC EQUATIONS*
Write the equation for the circle with center at ( 8,  6) and radius of 10. (x+8)² + (y + 6)² = 10 (x+8)² + (y + 6)² = 100 (x8)² + (y  6)² = 100 Find the standard equation for the circle with center on the positive xaxis … 
pre calculus
Write the equation of the circle in standard form. Find the center, radius, intercepts, and graph the circle. x^2+y^212x4x+36=0 How on earth do I do this? 
college precalculus
4x^2+4y^216x24y+51=0 is the equation of a circle. where is the center of the circle and what is it's radius? 
Geometry
Write the General form equations for the following circles: 1. A circle with center (1, 6) and radius 4 2. A circle with center (6, 8) and radius 10 3. A circle with center (0, 3) and radius 2√3 4. A circle with center (0.5, 5.5 …