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August 20, 2014

August 20, 2014

Posted by **grace** on Friday, January 11, 2013 at 5:47am.

- solid mensuration -
**Reiny**, Friday, January 11, 2013 at 8:31amarea of ellips = πab, where a and b are each 1/2 of the major and minor axes

so area = π(30)(45/2) = 2700π cm^2

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