4. Write a Python program to that takes as input a oating point number to 1- 3 I use as the width of rectangles used to estimate the integral / gag +.td_r . \"i The program will estimate this by taking the sum of rectangles of these h these widths. For example. the sum ofthe areas of the four rectangles 2 of width % is shown on the right. Please demonstrate the use of a for loop in your program. What happens to the estimate when the 1 width is smaller? What should the area be