Question 1099840
Just a start, not the whole solution:


h, height
r, radius


{{{highlight_green(pi*r^2*h=600)}}}


Area of the can:
{{{2pi*r*h+2*pi*r^2}}}


Using the prices for the parts, the cost for 1 can:
{{{highlight_green(0.04*2pi*r*h+0.05*2*pi*r^2)}}}
and you want to substitute for one of the variables, ....

.

.