Answer: 32
Step-by-step explanation:
AD makes up a leg of triangle ABD, and since we know AB and BD, we can use pythagorean theorem to calculate AD.
[tex]a^{2} +b^{2} =c^{2}[/tex], where AD is a, BD is b, and AB is c.
Rearranged and solved for a, we get AD = 32.
