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#### karush

##### Well-known member

- Jan 31, 2012

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- Thread starter karush
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- Jan 31, 2012

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Large circle diameter, $D = PR+RQ$

$\pi D = \pi(PR+RQ) = \pi \cdot PR + \pi \cdot RQ$

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- Jan 31, 2012

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yes I know often the GRE diagrams are not for assumptions

so just adding as equal term is not absolute