The surface area of a cube is 54 square centimeters. Divide it into two cuboids equally. The surface area of each cuboid is______ Square centimeter

The surface area of a cube is 54 square centimeters. Divide it into two cuboids equally. The surface area of each cuboid is______ Square centimeter


54 △ 6 = 9 (square centimeter), and because 3 × 3 = 9 (centimeter), the edge length of the cube is 3cm; then the length, width and height of the cuboid are 3, 3 and 1.5cm respectively, and the surface area of the cuboid is (3 × 3 + 1.5 × 3 + 3 × 1.5) × 2, = 18 × 2, = 36 (square centimeter); answer: the surface area of each long cuboid is 36 square centimeter; so the answer is: 36



Use a 48 decimeter long wire to make a cuboid frame. The ratio of length to width is 3:2:1. What are the surface area and volume of the cuboid


Length 48 △ 4 × 3 / (3 + 2 + 1)
=12×1/2
=6 cm
Width 6 × 2 / 3 = 4cm
Height 6 × 1 / 3 = 2 cm
Surface area (6 × 4 + 6 × 2 + 4 × 2) × 2 = 88 square centimeter
Volume 6 × 4 × 2 = 48 CC