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


<h3>hope it would be helpful </h3>
Answer:
Well isn't anyone able to write?
330 miles / 5.5 hours
= 54.54 miles/hour.
Glad I could help!