Winners from last weeks math problem, and the new problem of the week

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The Valentine Problem

Answer:  8 feet 

Winners: Kyle Bartlett & Maddy Johnson

The Plot of Land Problem

 

The shaded triangular plot of land

ACB lies between Aspen Road, Brown road and a railroad.  Main Street runs east and west, and the railroad runs north and south.  The numbers in the diagram indicate distances in miles.  The width of the railroad track can be ignored.  How many square miles are in the shaded plot of land ACD?