In this lesson we’ll look at how to write the equation of a circle in standard form in order to find the center and radius of the circle. The standard form for the equation of a circle is (x-h)^2+(y-k)^2=r^2, where r is the radius and (h,k) is the center. Sometimes in order to write the equation of a circle in standard form, you’ll need to complete the square twice, once for x and once for y.
Read MoreIn this lesson we’ll look at the equation for a circle and how to use it to graph a circle, interpret points on a circle and write an equation given a graph or the special features of a circle. A circle can be defined by a center point and a radius of a certain length. In the equation of a circle.
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Read MoreThe circumference of a circle is the distance around the circle (its perimeter). You can find the circumference if you know either the radius or the diameter.
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