Friday

February 27, 2015

February 27, 2015

Posted by **coried** on Tuesday, August 11, 2009 at 6:01pm.

- Algebra -
**MathMate**, Tuesday, August 11, 2009 at 6:24pmBy definition of a circle, the centre is always at the same distance (=radius) from the circumference, or more precisely, any tangent to the circle.

If the circle of radius 5 rolls above the x-axis, the locus of the centre is therefore y=5. If it rolls under the x-axis, the locus of the centre is y=-5.

**Answer this Question**

**Related Questions**

math - a circle is tangent to the y-axis at y=3 and has one x-intercept at x=1 a...

NEED MAJOR HELP! *QUADRATIC EQUATIONS* - Write the equation for the circle with ...

math - Write an equation of a circle with the center (-5,-4) and radius 6. The ...

Algebra - 1.How do I find the center of a circle using the points (2,8) (-4,6) (...

Algebra II - In this set of eight problems, we have to match each equation with ...

Math - The points (4, –5) and (– 4, 1) are endpoints of a diameter of a circle...

maths - 1) Circle centre (7,-2) passes through (-2,10). Calculate radius and ...

physics - A plastic rod has been bent into a circle of radius R = 8.80 cm. It ...

Equations of a Circle - Write the standard for of the equation of the circle ...

college pre-calculus - 4x^2+4y^2-16x-24y+51=0 is the equation of a circle. where...