Answer:
15 miles
Explanation:
The Pythagorean theorem states that
where a and b are the two legs (the sides of the triangle that are adjacent to the right angle) and c is the hypotenuse (the longest side). This only applies to right triangles.
Plug 12 mi and 9 mi into
as a and b.
Take the square root of both sides
Therefore, the length of the hypotenuse is 15 miles.
I hope this helps!