For this case we have that by definition, the Pythagorean theorem states that:

Where:
a, b: Are the legs
c: It is the hypotenuse
According to the figure we have to:

Substituting in the formula we have:

Answer:
Option D
7.
If c = 16
that means the equation is
16 - 9
which is 7
so 7
109.526 + 36.42 equals 145.946