Question 1208131
Answer without showing the steps, part (a)

{{{cross((4x^2+(10-4x)^2)/4)}}}-----algebraic mistake needs to be corrected.



<s>How that was started</s>; if 4x is the perimeter for the square then x is length of ONE SIDE of the square.   Also 10-4x becomes circumference for the circle.


Maybe this is enough for you to fill in the steps.