Question

Guanglei works in urban landscaping design. A delivery truck arrived, pouring a cone-shaped pile of gravel 6 feet high with a diameter at the base of 8.2 feet. How much gravel was delivered? (Use π=3.14)

Answer 1

105.57 cubic feet.

Explanation:

A delivery truck arrived in the construction site and pouring a cone-shaped pile of gravel 6 feet high with a diameter at the base of 8.2 feet.

Therefore, the volume of the cone shaped pile is
`(1)/(3)\pi  r^(2)h`, where r =
`(8.2)/(2)=4.1` feet and h = 6 feet.

Hence, V =
`(3.14 *(4.1)^(2)* 6 )/(3) =105.57` cubic feet.

So, 105.57 cubic feet of gravel was delivered. (Answer)