Posted by **Ryan** on Thursday, March 1, 2012 at 11:38pm.

x^2+y^2=36 is a circle. How can you tell without actually plotting? Where is the center?

- math -
**Bosnian**, Friday, March 2, 2012 at 2:20am
The center placed in the point (0,0)

radius = sqrt ( 36 ) = 6

- math -
**Steve**, Friday, March 2, 2012 at 2:20pm
ya gotta know that

(x-h)^2 + (y-k)^2 = r^2

is the equation for a circle of radius r with center at (h,k)

## Answer This Question

## Related Questions

- Geometry - A scientist is plotting the circular path of a particle on a ...
- DIT - Given the co-ordinates (x,y) of a center of a circle and it's radius. ...
- Math - I have a question my brother asked me but I need a math expert. You have ...
- math - -a circle with center at the point O(0,0) also has the point P(-2,3) on ...
- Math - The points (4, –5) and (– 4, 1) are endpoints of a diameter of a circle...
- Equations of a Circle - Write the standard for of the equation of the circle ...
- math - A circle has its center at the center of a square with 12-inch sides. ...
- 4th grade math - Is 1,725+346 more or less than 2,000? Explain how you can tell ...
- Math - Circle O is centered at the origin and has a radius of 5. Circle O' is ...
- Geometry - I have a circle with a Tangent line, DE, running along it and ...

More Related Questions