An equilateral triangle has a perimeter of 15x3 + 33x5 feet. What is the length of each side?

An equilateral triangle has three equal sides, so divide its perimeter by 3: (15x³ + 33x⁵) ÷ 3 = 5x³ + 11x⁵. Each side is 5x³ + 11x⁵ feet, which is choice D.

AI-written and checked against the verified answer.