The width of a rectangular parallelepiped is 14 cm, it is 2 times less than the length but 4 cm more than the height

The width of a rectangular parallelepiped is 14 cm, it is 2 times less than the length but 4 cm more than the height, find a) the sum of the lengths of all edges, b) its surface area, c) volume

1) 14 * 2 = 28 (cm) – length
2) 14-4 = 10 (cm) – height
3) 14 * 4 + 28 * 4 + 10 * 4 = 56 + 112 + 40 = 208 (cm) – the sum of the lengths of all edges
4) 28 * 10 * 2 + 14 * 10 * 2 + 14 * 28 * 2 = 560 + 280 + 784 = 1624 (cm²) – surface area
5) 14 * 28 * 10 = 3920 (cm³) – volume
Answer: 208cm, 1624cm², 3920cm³