Answer:

Explanation:
To find the missing side length (perpendicular) of the right triangle, we can use the Pythagorean Theorem.
The Pythagorean Theorem states that "in a right-angled triangle, the square of the length of the hypotenuse (c) is equal to the sum of the squares of the lengths of the other two sides (a and b)".
The formula is given by:

In this case:
- Hypotenuse (c) = 16
- Base (a) = 5
- Perpendicular (b) = x
Substitute these values into the Pythagorean Theorem:


Now, solve for x:





So, the missing side length x = 15.2, rounded to the nearest tenth.