Answer
20.58 $yd^{2}$
Work Step by Step
According to the figure, b = 9.8 yd and h = 4.2 yd.
The formula for area of a triangle is: A = $\frac{1}{2}$bh.
=$\frac{1}{2}$x 9.8 x 4.2 =20.58 $yd^{2}$
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