9514 1404 393
Answer:
40.56 ft
Step-by-step explanation:
The length of the semicircle of diameter 8 ft is ...
(1/2)(π)(d) = (π/2)(8 ft) = 4π ft ≈ 4×3.14 ft = 12.56 ft
Then the sum of the lengths of all of the sides of the figure is ...
P = 10 ft + 8 ft + 10 ft + 12.56 ft = 40.56 ft
The perimeter of the figure is about 40.56 ft.
