Answer:
1.2 in3
Explanation:
The volume of a cone is given by the following formula:
Volume = (1/3) * pi * r^2 * h
Where r is the base radius and h is the height.
So, if the full cone height is 4 inches and the diameter is 3 inches (that is, the radius is 3/2 = 1.5 inches), we have that half of the cone's height is 2 inches, and the diameter will be 1.5 inches (so the radius is 0.75 inches). Then, the volume of half the cup is:
Volume = (1/3) * pi * 0.75^2 * 2 = 1.1781 in3
Rounding to nearest tenth, the volume is 1.2 in3