How many inches is there in 1/8th of a yard?

There are $4 \frac{1}{2}$ inches in $\frac{1}{8}$ yard.
In $1$ yard we have $3$ feet and in each feet we have $12$ inches.
So we have $3 \times 12 = 36$ inches in each yard.
Hence in $\frac{1}{8}$ yard, we have $36 \times \frac{1}{8} = 9 \cancel{36} \times \frac{1}{2 \cancel{8}} = \frac{9}{2} = 4 \frac{1}{2}$ inches.