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August 28, 2014

August 28, 2014

Posted by **annette** on Friday, February 11, 2011 at 8:16am.

- math -
**Anonymous**, Friday, February 11, 2011 at 8:38amlet altitude be x

area = 1/2 * base * altitude

= 1/2 * x * 4x = 162

x^2 = 81

x=9

so altitude = 9cm

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