[tex]\text{Eraser =} 1\dfrac{1}{3} \text{ inches}[/tex]
[tex]\text{Pen =} 1\dfrac{1}{3} \times 4 \text{ inches}[/tex]
[tex]\text{Pen =} \dfrac{4}{3} \times 4 \text{ inches}[/tex]
[tex]\text{Pen =} \dfrac{16}{3} \text{ inches}[/tex]
[tex]\text{Pen =} 5\dfrac{1}{3} \text{ inches}[/tex]
