Can anyone help? Would appreciate it a lot for both these questions!

h = √65, length of diagonal = √117

Step-by-step explanation:

1) FE = DC since △FEA congruent to △CBD. Therefore FE per say  = 23-15/2 = 4.   Respectively we can find height "AE" using Pythagorean theorem;

AE = √(9)^2-(4)^2 = √81-16  = √65 units

h = √65

2) The diagonal of this rectangle forms two smaller triangles, each of which have legs of length 4 + 2 & 4 + 4 respectively. Use Pythagorean Theorem and determine the length of the diagonal;

Legs =  6 & 8

6^2 +9^2 = diagonal^2,

length of diagonal = √6^2 + 9^2

                               = √117 units

diagonal = √117