Question

A drum of oil has a height of 4 feet and a radius of 1.2 feet. the oil cost $22 per cubic feet.

what is the cost to fill the drum of oil?
round only your final answer to the nearest penny.
$__

Answer 1

$397.90

Explanation:

We have to calculate the cost to fill the drum with oil.

The formula to get the volume of the drum is V = πr²h

V = 3.14×(1.2)²×4 = 18.09 feet³

Now, find the cost of oil to fill the drum:

Cost = Volume × cost = 18.09×22 = $397.90

Answer 2

Well, first we should calculate just how much volume the drum can carry.
The formula we should use is πr^2(h):
π((1.2 ft)^2)(4 ft)
π(1.44 ft^2)(4 ft)
5.76π ft^3 ≈ 18.1 ft^3
Thus is costs:
$22 * 18.1 ft^3
$398.2