I have a quadrilateral with perimeter 4 and area 1.
Find the maximum value of the product of its diagonal lengths.
underroot 2 into underroot 2=2
bcz area will be maximum and 1 only if x=y=z=v=1
A rectangle is divided by four lines, as shown, with 4 of the resulting triangles having known areas. Find the area of the quadrilateral that is shaded in grey.
