Answer:
1st one is 64 second one is 46
Explanation:
For 1. Diagonals in rectangle are bisectors and equal so





QN is half of PN so

PN is 64.
AC and DB are congruent to each other. AE is half of AC so we set them equal to find




Plug it into each one
we get 23+23=46 so DB is 46