Question

a drum of oil has a height of 4 feet and a radius of 1.2 feet. the oil costs $22 per cubic feet.
what is the cost to fill the drum of oil?
use 3.14 for pi.
round only your final answer to the nearest penny.
enter your answer in the box.

Explanation:

Step1: Calculate drum volume (cylinder)

$V = \pi r^2 h = 3.14 \times (1.2)^2 \times 4$
First compute $(1.2)^2 = 1.44$, then $3.14 \times 1.44 = 4.5216$, then $4.5216 \times 4 = 18.0864$ cubic feet

Step2: Calculate total cost

$\text{Total Cost} = V \times 22 = 18.0864 \times 22$
$18.0864 \times 22 = 397.9008$

Step3: Round to nearest penny

Round $397.9008$ to two decimal places.

Answer:

$397.90$