Answer:
10.3 ft
Step-by-step explanation:
Perimeter of window
= perimeter of semicircle + length of diamdter
[tex] = \frac{1}{2} \pi \: d + d \\ \\ = \frac{1}{2} \times 3.14 \times 4 + 4 \\ \\ = 3.14 \times 2 + 4 \\ \\ = 6.28 + 4 \\ \\ = 10.28 \: ft
[/tex]
= 10.3 ft
