2025 Maths Adv HSC Q26 Solve area optimisation problem using algebraic techniques & without calculus

Keywords: quadratic function, parabola, concave-up, concave-down, equilateral triangle, circle, circumference, perimeter, maximise area Sample solution: © The Maths Studio (themathsstudio.net) Source: © NSW Education Standards Authority Disclaimer: This sample solution is intended as a guide only and does not necessarily represent the best way to answer the question, nor is there any guarantee of accuracy.