Adrum of oil has a height of 4 feet and a radius of 1.2 feet. the oil cost $22 per cubic feet. what is the cost to fill the drum of oil? round only your final answer to the nearest penny.$__

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