Exercise 1. Write a program in Pascal and build a block diagram of the algorithm to solve the following problem: Calculate the area of a right triangle using known legs. The length of the legs is set using the input operator yourself. For verification, you need to send screenshots with the code and the result of the program, as well as the constructed block diagram of the algorithm. Task 2. The quadrilateral ABCD is given. From the lengths of the four segments (AB, BC, CD, DA) entered by the user using the input operator, determine whether it is possible to fit a circle into a given quadrilateral made up of these segments. If the action is possible, display the message “It is possible to enter a circle”, otherwise display an error message. The task must be completed on Pascal. For verification, you need to send screenshots with the code and the result of the program. Task 3. Write code in Pascal to solve the problem. An array of 12 integers is given. Find the maximum even element in the given array. Display its value and position in the array. For verification, you need to send screenshots with the code and the result of the program.