Answer:
135/22 = 6.136
Explanation:
use the pythagorean formula
16^2 + x^2 = (x+11)^2
256 +x^2 = x^2 + 22x +121
cancel out the x^2
256 - 121 = 22x
135 = 22x
x = 135/22 = 6.136363636363636...
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