Answer:
The value of x = 13.60 units.
Explanation:
Given
a = 8
b = 11
To determine
c = x = ?
Pythagorean Theorem
For a right-angled triangle with sides a, b and c, the hypotenuse 'c' is defined as:

substituting a = 8, b = 11, and c = x

as 8²=64 and 11²=121
so


units
Therefore, the value of x = 13.60 units.