Which explains how to find the radius of a circle whose equation is in the form x2 + y2 = z?

Asked by wiki @ 25/10/2020 in Mathematics viewed by 460 People

Answered by wiki @ 25/10/2020

If the expression is x^2 + y^2 = z, means that the radius is √z.

That is because the general expression of a circle with the center at the origin of the coordinate system is x^2 + y^2 = (radius) ^2

Then in your expression z = (radius) ^2, and the radius is found by taking square root>

√ (radius) ^2 = √z

=>radius = √z

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