What is the radius of the circle given by the equation \(x^2 + y^2 = 15\)? The value of \(r^2 = 15\) so the radius of the circle is \(\sqrt{15}\).

It rounds off to 3.14159, and it is defined as the ratio of the circumference of a circle ... in this form allows mathematicians to understand it more clearly. Most importantly, the equation ...

Any point P with coordinates (\(x,~y\)) on the circumference of a circle ... given by the equation \(x^2 + y^2 = 15\)? The value if \(r^2 = 15\) so the radius of the circle is \(\sqrt{15}\).