Can someone pls help me

Answer:
10
Step-by-step explanation:
use Pythagoras Theron
a^2+b^2=c^2
let ms know if you have further questions
Using Pythagorean theorem
[tex]\\ \sf\longmapsto H^2=P^2+B^2[/tex]
[tex]\\ \sf\longmapsto H^2=(5√3)^2+5^2[/tex]
[tex]\\ \sf\longmapsto H^2=75+25[/tex]
[tex]\\ \sf\longmapsto H^2=100[/tex]
[tex]\\ \sf\longmapsto H=10[/tex]