Answer:
a = 16.13 ft²
Step-by-step explanation:
Triangle
a = (1/2)bh
a = (1/2)6 * 4
a = 12
Semicircle
a = (1/2)πr²
a = (1/2)(3.14)(3²)
a = 14.13
Combined figure
a = 12 + 14.13