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a plane intersects a sphere 5cm away from the center of the sphere. the cross section is a circle whose diameter is 12 cm. determine the radius of the sphere
5 years ago

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Reiny
I made a sketch and let the radius of the sphere be r cm
then it looked like
r^2 = 6^2 + 5^2 =61
r = √61 = ....
5 years ago

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