Answer:
15 unit^2
Step-by-step explanation:
Cut the shape into a square and a triangle, Do 3 x 3 for the square, which equals 9
Now subtract the 7 by 3 to find the length of the side of triangle, which is 4
The formula for triangle's area is 1/2 L x W, so 1/2 of 12 is 6, and 9+6 is 15
