Answer:
12 yd²
Step-by-step explanation:
The formula for area from base and height is ...
A = 1/2bh
Filling in the numbers from the figure, we have ...
A = 1/2·(8 yd)(3 yd) = 12 yd²
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The given side lengths can be used to compute the height and the area. On the basis of the 9 yd side lengths, the height is √65 = 8.062 yd, and the area is 4√65 ≈ 32.249 yd².
Given the base length and height, the side lengths should be 5 yd, not 9 yd.
In short, the geometry shown is impossible.
