Question

Heidi hikes two trails, the big trapezoid. The shorter base of the big trapezoid is 2 mi long, while the longer base is 8 mi. The longer base of the little trapezoid is 4 mi long. The trails are similar shapes

Answer 1

two trapezoid are similar
so it has some scale factor look longer base of a big trap is 8 mi,
and longer base of shorter trap is 4mi
so that is half of big trapezoid.
so little trapezoid base should be 1 as big trap's shorter base is 2mi

Answer 2

Answer is in the image