Find the volume of a sphere with a diameter of 3.5 ft. Use 3.14 for pi. Round your answer to the nearest hundredth, if necessary.

The radius of the sphere is half of its diameter, so it is 3.5 / 2 = 1.75 ft.

The volume of a sphere is given by the formula V = (4/3)πr^3.
Plugging in the values we have, V = (4/3) * 3.14 * (1.75)^3 = 4.18 * 1.75^3 = 22.39 ft^3.
Rounded to the nearest hundredth, the volume of the sphere is 22.39 ft^3. Answer: \boxed{22.39}.