To find the missing length of a triangle we will use the Pythagorean Theorem. Pythagoream Theorem = a^2 + b^2 = c^2 With this formula, we can find the missing side as follows: 27^2 + 36^2 = c^2 729 + 1,296 = C 2,025 = C 45 = C^2 There for we can conclude that the answer for the missing side is: 45 inches.