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

Answer:

105.57 cubic feet.

Step-by-step 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 $\frac{1}{3}\pi r^{2}h$, where r = $\frac{8.2}{2}=4.1$ feet and h = 6 feet.

Hence, V = $\frac{3.14 \times(4.1)^{2}\times 6 }{3} =105.57$ cubic feet.

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