Find the missing side length. leave you answers as radicals in the simplest form.

This is a 45, 45, 90 triangle. So 2 sides are equal and the other one (hypotenuse) is one of the sides times the square root of 2. So, b is also s times the sqaure root of 2. C is 2 times the square root of 2 times the sqaure root of 2 again, or just 4.