the answer by matlab code the answer is blow but i need the

the answer by matlab code

the answer is blow but i need the code

Finish the open channel problem shown below in an M-file script entitled Probl_3.m. The object is to find the minimum perimeter P=2L+b subject to the cross section constraint of 144 square feet. Display the final values of b, L and P. The base length b is: 10.53 The side wall length 1 is: 10.53 The side wall angle in degrees is: 60.00 The total length is: 31.59