Q: A wall, rectangular in shape, has a perimeter of 72 m. If the length of its diagonal is 18 m, what is the area of the wall ?

The answer given to me is area of 486 m2. This is the explanation given to me

Is it possible to have a rectangle of diagonal 18 m and area greater than the area of a square of side 18 m ?

**Answer**

**Attribution***Source : Link , Question Author : user17838 , Answer Author : Théophile*