A cubic inch is the same an inch to the third power.
[tex]in^3=in\times in\times in[/tex]If we use our measurement conversion
[tex]1in=2.54\operatorname{cm}[/tex]In our previous equation, we have
[tex]in\times in\times in=2.54\operatorname{cm}\times2.54\operatorname{cm}\times2.54\operatorname{cm}[/tex]Solving this product, we have
[tex]2.54\operatorname{cm}\times2.54\operatorname{cm}\times2.54\operatorname{cm}=16.387064cm^3[/tex]Then, this is our answer.
[tex]1in^3=16.387064cm^3[/tex]