Gcse foundation
Help pls.

Answer:
In right angle triangle ,hypotenuse is equal to sum of two other sides.so,
(h)^2=(p)^2+(b)^2
(8)^2=(3)^2+(x)^2
64=9+x^2
64-9=x^2
55=x^2
[tex]\sqrt{55}[/tex]=x
7.4=x
Step-by-step explanation: