Complete method area in the following class. All it needs is a return statement.

class Rectangle: """ A rectangle with a width and height. """

def __init__(self, w: float, h: float) -> None: """Create a new rectangle of width w and height h.

>>> r = Rectangle(1.5, 2.7) >>> r.width 1.5 >>> r.height 2.7 """

self.width = w self.height = h

def area(self) -> float: """Return the area of this rectangle.

>>> r = Rectangle(10.0, 20.0) >>> r.area() 200.0 """