Answer:
b. 40 yd²
Explanation:
We have the square and the right triangle.
The formula of an area of a square:
![A_{\boxed{}}=a^2](https://img.qammunity.org/2020/formulas/mathematics/middle-school/3j7j0qz41t8v6rlmsh3kpw0czp8ex8i1vg.png)
a - length of side
The formula of an area of a right triangle:
![A_\triangle=(ab)/(2)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/wqu118f2k3uqj3cxbf9a0083uw2f4hmxn8.png)
a,b - legs
We have:
SQUARE:
a = 4 yd
![A_{\boxed{}}=4^2=16\ yd^2](https://img.qammunity.org/2020/formulas/mathematics/middle-school/pnbbo9dh2fycwdxbfcepprs83zttera6am.png)
RIGHT TRIANGLE:
a = 6 yd, b = 4 yd + 4 yd = 8 yd
![A_\triangle=((6)(8))/(2)=(3)(8)=24\ yd^2](https://img.qammunity.org/2020/formulas/mathematics/middle-school/viqn5vuwgi4bqzh1056pwm5wqc600jucx5.png)
The area of the figure:
![A=A_{\boxed{}}+A_\triangle\\\\A=16\ yd^2+24\ yd^2=40\ yd^2](https://img.qammunity.org/2020/formulas/mathematics/middle-school/qw1b1le6e2nwd4as9dojft0dodiykjpviq.png)