find area of shaded portion
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area of triangle + area of square + area of triangle
1/2 * b * h + 4 * s² +1/2 * b * h
1/2 * 13 .5 * 2 + 11 * 2 + 1 3.5 * 2 + 1/2 * 13.5 * 2
13.5 + 22 +27 + 13. 5
76 cm ²
1/2 * b * h + 4 * s² +1/2 * b * h
1/2 * 13 .5 * 2 + 11 * 2 + 1 3.5 * 2 + 1/2 * 13.5 * 2
13.5 + 22 +27 + 13. 5
76 cm ²
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