Answer:
5x^3 + 11x^5 ft
Step-by-step explanation:
An equilateral triangle has all three sides of equal length, so the perimeter is found by
P =3s where s is the side
We know the perimeter
15x^3 + 33x^5 = 3s
Divide each side by 3
15/3x^3 + 33/3x^5 = 3/3s
5x^3 + 11x^5 = s
Each side is 5x^3 + 11x^5 ft
