Answer:
[tex]105.56\ ft^3[/tex] of gravel was used.
Step-by-step explanation:
Given that,
The height of a cone, h = 6 feet
The diameter of the base of cone, d = 8.2 feet
Radius, r = 4.1 feet
We need to find the amount of gravel was delivered. The volume of a cone is given by :
[tex]V=\dfrac{1}{3}\pi r^2 h\\\\=\dfrac{1}{3}\times 3.14\times 4.1^2\times 6\\\\V=105.56\ ft^3[/tex]
So, [tex]105.56\ ft^3[/tex] of gravel was used.
