Question

A drum of oil has a height of 4 ft and a radius of 1.2 ft. The oil cost $22 per ft³.

What is the cost to fill the drum of oil?

Answer 1

$397.9 is the answer, i took the test today

Answer 2

$397.90

Step-by-step explanation

First, we are going to find the volume of our drum of oil. Since a drum of oil is a cylinder, we are going to use the formula for the volume of a cylinder:

`V=\pi r^2h`

where

`V` is the volume of the cylinder

`\pi =3.14`

`r` is the radius of the cylinder

`h` is the height of the cylinder

We know from our problem that the radius of the drum of oil is 1.2 ft and its height is 4 ft, so let's replace the values in our formula:

`V=\pi r^2h`

`V=3.14*(1.2ft)^2*4ft`

`V=3.14*1.44ft^2*4ft`

`V=18.0864ft^3`

Now, we just need to multiply the volume of the drum of oil by the oil cost per
`ft^3`:

Cost to fill the drum of oil =
`18.0864ft^3*(22dollars)/(1ft^3) =397.90dollars`