How do I do Question 5 a Part ii?

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Question 5 (19 marks) Prudence needed to design a rectangular enclosure inside a triangle-shaped paddock. There were some constraints, however. Firstly, the paddock must be in the shape of an isosceles triangle, and it must have a perimeter of 100 m. Secondly, the area of the rectangular enclosure must be as large as possible, and its corners must connect to the equal length sloping edges (legs) of the paddock. Finally, one side of the enclosure must coincide with the base side of the paddock. The design requirements are illustrated in the diagram below. Paddock Perimeter of paddock = 100 m Enclosure with maximum area Base SerSMMETHEZB 102021 24 Published by QATs. Permission for copying in purchasing school only.OATS VCH Mathematical Methods Practice Exammann1, Unit 1 -da a. Prudence decided to use linear equations to mendel the scenario, as shown in the graph below (x.0) Show that; 3 marks -10v100 - 26 * + 5V100 -25QATs VCE Mathematical Methods Practice Examination 2. Units 3 and 4 Hence show if a (x) is the equation for the area of the rectangle, then 2 marks a(x) can be expressed as: -20V100 -25 x + 10V100 - 25x HIL In terms of b, what are the dimensions of the rectangular enclosure 3 marks with the greatest area