Which explains how to find the radius of a circle whose equation is in the form x2 + y2 = z? the radius is the constant term, z. the radius is the constant term, z, divided by 2. the radius is the square root of the constant term, z. the radius is the square of the constant term, z.

The standard form of the equation for a circle with radius r, centered at (h,k) is
(x - h)^2 + (y - k)^2 = r^2

The given equation is
x^2 + y^2 = z

Therefore h=0, k=0, and the circle has its center at the origin.
The radius is given by
r^2 = z  => r =√z

The radius is the square root of the constant term z.