(1) To make a kind of fruit candy packing box, there are two plans: 1. To make a rectangular iron box, 10 cm long, 8 cm wide and 6 cm high. 2. To make a cube iron box, 8 cm long? (2) There are four cuboid columns in front of the gate of a theater. The perimeter of the bottom surface of each column is 3.6 meters and the height is 5 meters. If the surface of these four columns is painted, the painted area is () square meters? (3) A cuboid swimming pool is 50 meters long, 30 meters wide and 3 meters deep. The walls and floor of the swimming pool should be plastered with cement. The area of plastering cement is () square meters? (4) There is a rectangular piece of hard paper, 24 cm in length and 16 cm in width. Cut off the same four corners and fold it along the dotted line to make a paperless carton. The surface area of the carton is ()? The order is a bit disordered, but please answer it for me. I just read it carefully. (although we only need to fill in the blanks, our teacher has to use the formula. I'm forced to be helpless~

(1) To make a kind of fruit candy packing box, there are two plans: 1. To make a rectangular iron box, 10 cm long, 8 cm wide and 6 cm high. 2. To make a cube iron box, 8 cm long? (2) There are four cuboid columns in front of the gate of a theater. The perimeter of the bottom surface of each column is 3.6 meters and the height is 5 meters. If the surface of these four columns is painted, the painted area is () square meters? (3) A cuboid swimming pool is 50 meters long, 30 meters wide and 3 meters deep. The walls and floor of the swimming pool should be plastered with cement. The area of plastering cement is () square meters? (4) There is a rectangular piece of hard paper, 24 cm in length and 16 cm in width. Cut off the same four corners and fold it along the dotted line to make a paperless carton. The surface area of the carton is ()? The order is a bit disordered, but please answer it for me. I just read it carefully. (although we only need to fill in the blanks, our teacher has to use the formula. I'm forced to be helpless~

(1) 10x8x6 = 480, 8x8x8 = 512512 ＞ 480, so the cuboid is filled
(2) 4x3.6x5 = 72, so fill in 72
(3) 50x30 + 2 (3x50 + 3x30) = 630
(4) Let the minus four corners be side length a
The surface area is 24x16-4a & # 178; = 384-4a & # 178; you should omit the condition of subtracting the length of four corners, otherwise it can't be calculated