A truckload of fill dirt is dumped in front of a newly-built home. The pile of dirt is cone-shaped. It has a height of 7 feet and a diameter of 15 feet. Find the volume of the dirt to the nearest hundredth.

Please help me with this

The volume of the dirt is

Step-by-step explanation:

We have, a truckload of fill dirt is dumped in front of a newly-built home. The pile of dirt is cone-shaped.

Height of pile of dirt is 7 feet and its diameter is 15 feet.

It is required to find the volume of the dirt.

The formula of the volume of cone is given by :

r is radius of cone shaped, r = 7.5 feet

So, the volume of the dirt is .

f(x) has value 150 at x= 0

and 0 at x= 3

so d(f(x))/dt = slope = -150/3 = -50