Composite shapes area

I redid it because I just realized that all of the sides summed to 749.97 and not 750. I rounded from when I multiplied 115.38*1.5=173.076 to 173.08 and now all of the sides sum to 750. Is my math and answer correct?
 

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Rounding is a major problem here; I'd avoid it entirely (apart from what your calculator does itself) and do the whole calculation without entering any rounded values. For the rectangle, I get 19,970.41 when I do that; for the height, 149.89; for the area of the triangle, 12971.16; and for the total, 32,941.57. Your answer is pretty good.
 
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