For this problem, we'll use a small subset of the ICDB quality of life data. The permanent SAS data sets qul11 and qul21 each contain five variables: subj_id, the subject's id number v_type, the visit type which should be 0 for each subject in the data set v_date, the date the form was completed qul_1, the subject's reply to the first answer on the quality of life form qul_2, the subject's reply to the second answer on the quality of life form The data set qul11 contains 106 observations on only those subjects whose id number starts with 11. The data set qul21 contains 109 observations on only those subjects whose id number starts with 21. Do what it takes to concatenate the two data sets into one temporary data set named qul containing 215 observations. For output, rather than printing the entire data set, just use PROC CONTENTS to report the structure and contents of the qul data set.

Write a program that displays the following menu: geometry calculator 1. calculate the area of a circle 2. calculate the area of a rectangle 3. calculate the area of a triangle 4. quit enter your choice (1-4): if the user enters 1, the program should ask for the radius of the circle and then display its area. use the following formula: area = ď€(the square of r) use 3.14159 for ď€ and the radius of the circle for r. if the user enters 2, the program should ask for the length and width of the rectangle and then display the rectangle’s area. use the following formula: area = length * width if the user enters 3, the program should ask for the length of the triangle’s base and its height, and then display its area. use the following formula: area = base * height * .5 if the user enters 4, the program should end. input validation: display an error message if the user enters a number outside the range of 1 through 4 when selecting an item from the menu. do not accept negative values for the circle’s radius, the rectangle’s length or width, or the triangle’s base or height. note: if the user enters an improper menu choice (1-4), the program prints "the valid choices are 1 through 4. run the program again and select one of those." if the user enters a negative radius, the program prints "the radius can not be less than zero." if the user enters a negative value for height or base, the program prints "only enter positive values for base and height."