Question 67680
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one side =1134.4, Square of side 1286863.36,(A)
Other 5.56, 	Square of side 30.9136 (B)
difference of squares =	(A-B)1286832.446
So third side =square root of 1286832.446 =	1134.386374

Area = 1/2*b*h = 0.5*5.56*1134.386374= 3153.59412 sq units

OK.
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