Answer:
22.75 square yards
Step-by-step explanation:
Use the formula to find area of a trapezoid;
[tex]a = \frac{a + b}{2} h[/tex]
[tex]a = \frac{4 + 9}{2} 3.5[/tex]
[tex]a = \frac{13}{2} 3.5[/tex]
[tex]a = 6.5 \times 3.5[/tex]
[tex]a = 22.75 \: {yd}^{2} [/tex]
