The width of the parallelepiped rectangle is 9cm, and it is 3 times less than the length, but 6cm more than

The width of the parallelepiped rectangle is 9cm, and it is 3 times less than the length, but 6cm more than the height. Find: 1) the sum of the lengths of all edges 2) the area of its surface

Answer: 156 cm; 702 cm2.
1. Determine the length of the parallelepiped:
9 * 3 = 27 (cm).
2. The height of this parallelepiped:
9 – 6 = 3 (cm).
3. The sum of the lengths of the milestones of the edges of this parallelepiped:
4 * (27 + 3 + 9) = 14 * 39 = 156 (cm).
4. Surface area of this parallelepiped:
S = 2 * (27 * 9 + 9 * 3 + 27 * 3) = 2 * (243 + 27 + 81) = 702 (cm2).