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Popular >

radius x^2+y^2=81

Solution

radius

x^{2} + y^{2} = 81

Solution

r = 9

Solution steps

x^{2} + y^{2} = 81

Rewrite

x^{2} + y^{2} = 81

in the form of the standard circle equation

(x - 0)^{2} + (y - 0)^{2} = 9^{2}

Therefore the circle properties are:

(a, b) = (0, 0), r = 9

And the radius is:

r = 9

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radius x^2+y^2=16 radius

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Frequently Asked Questions (FAQ)

What is the radius x^2+y^2=81 ?
The radius x^2+y^2=81 is r=9