In the figure, the square FGHJ is made up of two parts, K and L. The part, K, is formed by a semicircle and the line FG. The perimeter of K is 53 cm and the perimeter of the shaded part, L, is 81 cm.
- Find the perimeter of the square FGHJ.
- Find the area of the shaded part L. (Take π =227)