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28 February, 14:52

A sphere of diameter D 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.

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  1. 28 February, 15:04
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    0.25D^2 π in^2.

    Step-by-step explanation:

    The cross section is a circle of diameter D inches, so its radius is 0.5D inches.

    The area of cross section is πr^2

    = (0.5D) ^2 π

    = 0.25D^2 π in^2.
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