What is the volume of a cone with a diameter of 20 cm and a height of 15 cm? Use 3.14 for pi.(1 point)
The radius of the cone is half of the diameter, so the radius is 20 cm / 2 = <<20/2=10>>10 cm.
The formula for the volume of a cone is V = (1/3) * π * r^2 * h, where r is the radius and h is the height.
Substituting the given values, we have V = (1/3) * 3.14 * (10 cm)^2 * 15 cm.
Simplifying, we get V = (1/3) * 3.14 * 100 cm^2 * 15 cm.
Multiplying, we find V = 3.14 * 1000 cm^3 = 3140 cm^3.
Therefore, the volume of the cone is 3140 cm^3. Answer: \boxed{3140}.