Answer:
x = sqrt (22)
Step-by-step explanation:
This is a RIGHT triangle with the two legs of equal length sqrt 11
us pythagorean theorem
a^2 + b^2 = c ^2 where a and b are the legs and c = hypotenuse
(sqrt11)^2 + (sqrt11)^2 = x^2
11 + 11 = x^2
x = sqrt (22)
