Answer:
8.5 units ^2
Explanation:
Area of whole rectangle 3 x 6 = 18 units^2
now subtract the three right triangles
1/2* 2x5 + 1/2 * 1x3 + 1/2 * 1x6 = 9.5 units^2
18 - 9.5 = 8.5 units^2 < =====area of inscribed triangle in the rectangle
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