Answer
$\frac{12}{8}$ or $1 \frac{1}{2}$ mile
Work Step by Step
To calculate the perimeter of a triangle, the formula is:
$P=$ side a+side b+ side c
$P= \frac{3}{8}+ \frac{1}{2}+ \frac{5}{8}$
The least common multiple of the denominators is 8. Adjust the fractions based on the least common multiple. For the second fraction, multiply the numerator and denominator by 4.
$ \frac{1}{2}\times \frac{4}{4}= \frac{4}{8}$
$P= \frac{3}{8}+ \frac{4}{8}+\frac{5}{8}= \frac{12}{8}= 1 \frac{1}{2}$
