Three cuboids, 3cm long, 2cm wide and 1cm high, are used to form a large cuboid with the smallest surface area. What is the surface area of this cuboid in square centimeter?

Three cuboids, 3cm long, 2cm wide and 1cm high, are used to form a large cuboid with the smallest surface area. What is the surface area of this cuboid in square centimeter?

(3 × 2 + 3 × 3 + 2 × 3) × 2, = 21 × 2, = 42 (square centimeter); a: the surface area of this cuboid is 42 square centimeter

Two cuboids, 4cm long, 3cm wide and 1cm high, are used to form a large cuboid. What is the maximum and minimum surface area of the large cuboid?

The largest area is to reduce the two smallest surfaces = (4 × 3 + 3 × 1 + 4 × 1) × 4-3 × 1 × 2 = 70 square centimeters
The smallest area is to reduce the two largest surfaces = (4 × 3 + 3 × 1 + 4 × 1) × 4-4 × 3 × 2 = 52 square centimeters

How many CM & sup2 are the surface area of a cuboid or a cube made of eight cuboids with 1cm edges

The surface area is (4 * 1 + 4 * 2 + 1 * 2) * 2 = 28 square centimeters
Or (8 * 1 + 8 * 1 + 1 * 1) * 2 = 34 square centimeters
Cube: the surface area is (2 * 2 + 2 * 2 + 2 * 2) * 2 = 24 square centimeters