1. Write a program to find the integer square root of a given number. That is the largest integer whose square is less than or equal to the given number. 2. Apply the Babylonian Algorithm to compute the square root of 2. This algorithm (so called because it was used by the ancient Babylonians) computes square root of 2 by repeatedly replacing one estimate of x with the closer estimate of x = (x + (2/x))/2. Note that this is simply the average of x and 2/x. 3. Implement a Pyramid class with base and height as data members and surface area() and volume() calculations as member functions. 4. implement a Stack class for stacks of interreges. Include functions push() pop() isEmpty() and isFull(). Limit the stack size to 5.