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OpenStudy (anonymous):
What is the radius of the circle whose equation is x2 + y2 = 8? 2sqrt2 4 64
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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.
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OpenStudy (anonymous):
that explains it well.
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