The functionarea_rect(x, y)returns the area of a rectangle of length x and breadth y.

Define a functionarea_square(x)that:

1. Returns the area of a square of length x. Thearea_squarefunction should make use of thearea_rectfunction. Thus, you do not need to know how the area of a rectangular is calculated.
2. Returns0if the input parameter is <= 0.

Note: You do not have to define thearea_rectfunction yourself. You simply have to call the function.