Question 901027
Try it this way:

p = 5.40 dollars per kg
D = 560 pounds per cubic foot
r = 0.2043/12 feet
h=100 feet
Additionally, use a conversion ration, K = 0.454 kilograms per pound


You want COST of the piece of copper described.


{{{highlight_green((pi*h*r^2)*D*(0.454*kg/(pound))*p)}}} using the additional conversion factor for kilograms from pounds.  Substitute the given listed values and compute the cost.


This may seem clearer:
{{{highlight_green((pi*h*r^2)*D*K*p)}}}  dollars.