Posted by Jen on Tuesday, July 5, 2011 at 3:29pm.
The longest side of a right triangle is the hypotenuse, c in
a^2 + b^2 = c^2
so
a^2 + 20^2 = 52^2
a^2 = 2704 - 400 = 2304
a = 48
perimeter = 48 + 20 + 52 = 120 mm
area = (1/2)48(20) = 480 mm^2
oh thank you so much!! i was totally off...
You are welcome :)
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