Problem 6: Solve problem 19 on page 316 of Gilat's book 1. Program a function that calculates the integrand. 2. Use the MATLAB quad function in order to calculate the integral numerically. The length L of the main supporting cable of a suspension bridge can be calculated by a4h 2 1/2 4 where a is half the length of the bridge and h is the distance from the deck to the top of the tower where the cable is attached. Determine the length of a bridge with a = 80 m and h = 18 m