[tex]the\ volume\ of\ a\ paint\ tray\ is:\\\\ V=10\ in\cdot 12\ in\cdot5\ cm=120\ in^2\ \cdot \frac{5}{2.54} \ in= \frac{600}{2.54} \ in^3=\\\\=\frac{600}{2.54}\cdot \frac{1}{231} \ gallons= \frac{200}{2.54\cdot77} \ gallons= \frac{200}{195.58} \ gallons>1\ gallon\\\\Ans.\ Alaine\ fit\ one\ gallon\ of\ paint\ to\ the\ paint\ tray.[/tex]