You can find the area of the square and the triangle, and then add them together.
The area of the square is simply base × height, so you would do 10 × 10 = 100 in^2.
The area of the triangle is (base × height)/2. To find the base, you do 10 - 6 = 4 inches, and the height is 16 - 10 = 6 inches. Now, you can do (6 × 4)/2 = 12
100 + 12 = 112 in^2, which is your answer. I hope this helps!
