What is the length of the diagonal from vertex J to vertex L in the quadrilateral below?

Answer: Root 65
Step-by-step explanation: If we count the squares from J down to M and horizantally from M over to L, it is 7 by 4. Then we use the A squared plus B squared = C squared formula. What we get is 49 and 16. Add them together and we get 65. 65 is not a square root, so all we can get is root 65.