Question 1129965
label the triangle ABC, sides are a,b,c and angles are A, B, C
:
let a=50, b=60, c=70 and P is the midpoint of c such that CP is 35
:
use the Pythagorean Theorem 
:
35^2 +BP^2 = 60^2
:
BP^2 = 60^2 -35^2 = 3600 -1225 = 2375
:
BP = 48.734
: