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Mathematics 9 Online
OpenStudy (anonymous):

What is the radius of the circle whose equation is x2 + y2 = 8? 2sqrt2 4 64

OpenStudy (anonymous):

The radius is the square root of 8.

OpenStudy (anonymous):

You don't even need math to solve this now that you know that. the square root of 8 isn't 4 or 64, so it just leaves 2sqrt2. :D

OpenStudy (anonymous):

The sqrt of 8 is 2.82842712475

OpenStudy (anonymous):

or 2 sqrt 2.

OpenStudy (anonymous):

that explains it well.

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