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OpenStudy (reneeshumpert):
A circle has its center at the origin, and (5, -12) is a point on the circle. How long is the radius of the circle? 5 12 13 HELP
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OpenStudy (reneeshumpert):
okay all I see is a circle with lines through it
ganeshie8 (ganeshie8):
|dw:1433261217922:dw|
OpenStudy (reneeshumpert):
it would be -12?
ganeshie8 (ganeshie8):
|dw:1433261255670:dw|
ganeshie8 (ganeshie8):
apply pythagorean theorem in that right traingle : \[r^2 = 5^2+12^2\] solve \(r\)
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OpenStudy (reneeshumpert):
13 !!!?
ganeshie8 (ganeshie8):
Yes!
OpenStudy (reneeshumpert):
Thank you !
ganeshie8 (ganeshie8):
yw
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