Math Olympiad for Elementary | 2021 | Division E | Contest 3 | MOEMS | 3E

Problem: In the figure, QUAD is a quadrilateral. QUAD is "enclosed" by the rectangle RECT. This means that each vertex of QUAD is on a side of rectangle RECT. Segment QA is parallel to two of the sides of the rectangle. The length of QA is 18 and the length of EC is 13. What is the area of QUAD?

Key: Use the triangle area formula

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