Write a script that will prompt the user for the length and width of a rectangle,
call function perimarea to calculate and return the perimeter and area, and print
the result. for simplicity the function ignores units and error-checking.
hint: write the formulas in the function perimarea first that will calculate
the perimeter and area of a rectangle. decide what would be the input
arguments and what would be the output arguments of the function.

Write a method named addall that could be placed inside the hashintset class. this method accepts another hashintset as a parameter and adds all elements from that set into the current set, if they are not already present. for example, if a set s1 contains [1, 2, 3] and another set s2 contains [1, 7, 3, 9], the call of s1.addall(s2); would change s1 to store [1, 2, 3, 7, 9] in some order. you are allowed to call methods on your set and/or the other set. do not modify the set passed in. this method should run in o(n) time where n is the number of elements in the parameter set passed in.

What is the total resistance in a circuit that contains three 60 ohm resistors connected in a series? a. 20 ohms b. 120 ohms c. 60 ohms d. 180 ohms

Which feature is selected to practice and save the timing of a presentation