have test test tomorrow need help with these

Question

https://ibb.co/eLozXS

Answer 1

In #12 the dotted altitude is 38.1 (32 tan 50°)

The continue with mean proportional

Answer 2

In #11, the hypotenuse of the isosceles right triangle has length 9√2.

Then in the 30-60-90 triangle, the leg opposite the 30 degree angle should be doubled to find the hypotenuse;

therefore x = 18√2.