What is the area of this figure?
Write your answer using decimals, if necessary.

Answer:
173.5 mi²
Step-by-step explanation:
Bottom triangle
base = 6 mi + 5 mi + 3 mi + 5 mi = 19 mi
height = 9 mi
area = (19 × 9)/2 mi² = 85.5 mi²
Middle rectangle
(5 + 3) mi × 6 mi = 48 mi²
Top Rectangle
5 mi × 8 mi = 40 mi²
Total area = 85.5 mi² + 48 mi² + 40 mi²
Total area = 173.5 mi²