Answer:
300 yd²
Step-by-step explanation:
In such 2d-situation,
Observing the figure we say there are 3 rectangles and 2 unique triangle.
Area of rectangle = length x breadth
Ar. of 1st tilted(front) rec. = 12 x 5 = 60 yd²
Ar. of 2nd tilted(back) rec.= 12 x 8= 96 yd²
Ar. of the base rec. = 9 x 12 = 108 yd²
Area of each triangle = ½ x 4 x 9 = 18 yd²
Total surface area = 60 + 96 + 108 + 18 + 18 = 300 yd²
