The shape of a window of a building is shown in the figure. The upper part is a semicircle, and the lower part is two windows with the same shape, m in length and N in width Rectangle, calculating (1) Total length of window and window frame (2) When m = 50cm, n = 20cm, what are the area of the window and the total length of the window frame

The shape of a window of a building is shown in the figure. The upper part is a semicircle, and the lower part is two windows with the same shape, m in length and N in width Rectangle, calculating (1) Total length of window and window frame (2) When m = 50cm, n = 20cm, what are the area of the window and the total length of the window frame

(1) Window area = 3.14xnxn / 2 + 2xmxn
Total length of window frame = 3.14xn + 2x (2m + 2n)
(2) When m = 50cm, n = 20cm,
Area of window = 3.14x20x20 / 2 + 2x50x20 = 2628cm2
Total length of window frame = 3.14x20 + 2x2x50 + 2x2x20 = 342.8cm
I'm so good that I can figure it out without a picture
(calculated by two rectangles with width m and height n)