Volume of a cone: 1/3[tex] \pi [/tex]r²h
r is the radius (diameter ÷ 2) and h is the height.
Find the radius first using the diameter: 2[tex] \frac{1} {2}[/tex] ÷ 2 = 1.25
Now plug in the numbers into the formula.
1/3[tex] \pi [/tex]1.25²10 = 16.4
The volume of the cone is 16.4 cubic feet.