Formula to find the volume of the cone is:
Volume =
Where r = radius of the base of the cone
and h= height of the come.
Given, h = 8 and r = 5.
So, first step is to plug in these values in the above formula to get the volume. Therefore,
Volume =

= 3.14 * 25 * 2.66667 Since π = 3.14
= 209.4
Hence, the volume of cone is A: 209.4 ft³.
Hope this helps you!