Answer:
roughly 10.72
Step-by-step explanation:
Use Phyth. Thm.
16^2 + x^2 = 25^2
x^2 = 369
= 19.20937271 (this is now the height for the second triangle)
x^2 + 19.20937271^2 = 22^2
115.0000001 = x^2
x = roughly 10.72
