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July 30, 2014

July 30, 2014

Posted by **claire** on Saturday, December 8, 2012 at 1:05pm.

- math -
**Steve**, Saturday, December 8, 2012 at 4:56pmUsing Heron's formula,

the semi-perimeter is (83.75+110.65+90)/2 = 142.2

a = √(s(s-a)(s-b)(s-c))

= √((142.2)(142.2-83.75)(142.2-110.65)(142.2-90))

= 3699.79

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