Answer: option c
Explanation:
You need to use this formula:
![A=(h)/(2)(B+b)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/tfz4kw6icmaoedzr3tnlu2om2a7x8cgbad.png)
Where "h" is the height of the trapezoid, "B" is the larger base and "b" is the smaller base.
You know that:
![B=16.8yd\\b=6.9yd\\h=2yd](https://img.qammunity.org/2020/formulas/mathematics/middle-school/1w2m0xsa2pj67qyqyxs64k6art8r8jgkxz.png)
Then you need to substitute these values into the formula
.
Therefore, the area of this trapezoid is:
![A=(2yd)/(2)(16.8yd+6.9yd)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/ph44ipymb8sx6x1e1zlutebzgpnefcl4q7.png)
![A=23.7yd^2](https://img.qammunity.org/2020/formulas/mathematics/middle-school/8avt579izh3tr80ei1tdiwkgbaam8loqry.png)