Answer:219.96 yd²
Step-by-step explanation:The area of the trapezoid can be calculated using the following rule:Area of trapezoid =

where:
b1 is the length of the first base
b2 is the length of the second base
h is the height
Now, in the given we have:b1 = 15.8 yd
b2 = 21.8 yd
h = 11.7 yd
Substitute with the givens in the above equation to get the area as follows:area =

Hope this helps :)