Answer:
20 feet
Explanation:
Since the given side on the first triangle is 6 feet, and the corresponding side on the second triangle is 8 feet, the second triangle will have a perimeter 8/6 times the length of the first triangle. Multiply 15 by 8/6:
15*(8/6)=
15*8/6=
120/6=
20
lmk if im wrong, hope this helps :)