Hey guys thank you for all your help and support. I was wondering if I could get help with one more! <3:)

Answer:
9sqrt3
Step-by-step explanation:
Pythagorean theroem=h^2=p^2+b^2 or c^2=a^2+b^2
X is the reference angle,therefore, base=15' and perpenducular=6'
now,apply the thereom,
h^2=p^2+b^2
h^2=(6)^2+(15)^2
h^2=36+225
h^2=261
h=sqrt 261
You can write this in decimal or as 3sqrt29