Marci mailed nine letters at the post office. Each letter weighed 3.5 ounces. What was the total weight of the letters
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To find the area of the given polygon, first we will join P and S .
So we have two figures here, a rectangle GPST, and a triangle , PES .
Area of rectangle is length times width .
For the given rectangle, area is GP times PS .
And for triangle , area is half of the product of height and base.
For the given triangle,
Total area of the polygon is the sum of areas of rectangle and triangle , that is