In the figure, the square QRST is made up of two parts, U and V. The part, U, is formed by a semicircle and the line QR. The perimeter of U is 56 m and the perimeter of the shaded part, V, is 84 m.
- Find the perimeter of the square QRST.
- Find the area of the shaded part V. (Take π =227)