Given:
The volume of the sidewalk is 162 cubic feet.
In yards,
[tex]\frac{162}{3\times3\times3}=6\text{ cubic yards}[/tex]The selling price of concrete is $55.5 per cubic yard.
To find the amount that I spend to pave the sidewalk:
So,
[tex]6\times55.5=\text{ \$}333[/tex]Hence, the amount that I spend to pave the sidewalk is $333.