Answer:
$273.60
Step-by-step explanation:
The cost of stainless steel tubing varies jointly as the length and the diameter of the tubing.
i.e [tex]C\propto L\cdot D[/tex]
i.e [tex]C=k\cdot L\cdot D[/tex]
A 5 foot or 60 inches length with diameter 2 inches costs $48.00, so
[tex]\Rightarrow 48=k\times 60\times 2[/tex]
[tex]\Rightarrow k=\dfrac{48}{60\times 2}=0.4[/tex]
Now the equation becomes,
[tex]C=0.4\cdot L\cdot D[/tex]
So the cost of a 19 foot or 228 inches length with 3 inches diameter is,
[tex]C=0.4\times 228\times 3=\$273.60[/tex]
