## Thinking Mathematically (6th Edition)

20.58 $yd^{2}$
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 $yd^{2}$