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Mathematics 9 Online
OpenStudy (anonymous):

A sphere of diameter 10 inches is cut by a plane which passes through its center. Find the area of the cross-section, leaving the answer in terms of π. http://usatestprep.com/modules/questions/qq.php?testid=557&assignment_id=581170&strand=2925&totalQuestions=10&condition=random#question

OpenStudy (anonymous):

I really need this answer.

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