Answer:
15 units squared
Step-by-step explanation:
We can split this trapizoid into two shapes. One is a square with sides of three and three. the area is 9. The other shape is a triangle with dimentions of three and four. three times four is 12, and to find the area of the triangle we divide it be two. 12/2 is six. 9+6 is 15 units squared.