Answer:
Explanation
We can use the pythagorean theorem here. This theorem states that
, where c is the hypotenuse, and a, b are the other sides of the triangle.
We're given a, and b (both are 4), by plugging them into the formula, we get
. But the answer asks for
in radical form, and so we can take the square root of both sides, getting c = ±
. Since a negative side length doesn't make sense, we can finish by saying that
.