Question

PLEASE HELP! 20 points

Answer 1

CD=The square root of 20 squared minus 12 squared.
CD= the square root of 400 -144
CD=the square root of 256 = 16.

DA =The square root of 34 squared minus 16 squared.
DA=The square root of 1156-256
DA= the square root of 900
DA=30