\(\dfrac{2\frac{1}{4}\text{ inches}}{\frac{1}{4}\text{ inches}}=\dfrac{60 \text{ inches}}{\text{what}}\)LOL xD
\((2\frac{1}{4}\text{ inches})(\text{what})=(60\text{ inches})(\frac{1}{4}\text{ inches})\)
\(\text{what} = \dfrac{15\text{ inches}^2}{2\frac{1}{4}\text{ inches}}=\color{red}6\frac{2}{3}\text{ inches}\)