The flower bed has the shape of a cylinder with a 20-ft diameter and a 6-inch height.
6 in. = 0.5 ft
Volume of cylinder = pi * r^2 * h
diameter = 20 ft
radius = 10 ft
V = 3.14 * (10 ft)^2 * 0.5 ft
V = 157 ft^3
1885 ft^3 is incorrect because the 6-in. depth, which is the height of the cylinder, was not converted to ft.
