What is the volume of a hemisphere with a diameter of $4.4 \mathrm{ft}$, rounded to the nearest tenth of a cubic foot?

Step 1 ：Given diameter = 4.4 ft, find the radius: \(r = \frac{d}{2} = \frac{4.4}{2} = 2.2\) ft

Step 2 ：Find the volume of a sphere with radius 2.2 ft: \(V_{sphere} = \frac{4}{3} * \pi * r^3 = \frac{4}{3} * \pi * (2.2)^3\)

Step 3 ：Calculate the volume of the hemisphere: \(V_{hemisphere} = \frac{V_{sphere}}{2}\)

Step 4 ：\(V_{hemisphere} = \frac{\frac{4}{3} * \pi * (2.2)^3}{2}\)

Step 5 ：Final Answer: \(\boxed{22.3}\) cubic feet, rounded to the nearest tenth