A storage tank is shaped like a cylinder. The cylinder is 15 feet tall, and the base has a diameter of 12 feet. What is the cost of enclosing the container if the material of which the cylinder is made, if it costs $5 per square foot.
The total cost is given by
$15 (2 * pi * 6 * 15) =
$15 (180 * pi) =
about $8482.30
51 is that answer