If the height of a cube is increased by 4cm, it will become a cuboid. The surface area of the cuboid is increased by 80cm

The surface area increases by 80, and one surface is 80 △ 4 = 20
One side of this face is 4, and the other side is 20 △ 4 = 5
That is to say, the edge length of a cube is 5cm
The original volume of cube is 5 × 5 × 5 = 125 cubic centimeter
The original surface area of the cube is: 5 × 5 × 6 = 150 square centimeters

If the height of a cube increases by 4cm, it becomes a cuboid. The surface area of the cuboid is just 80 square meters larger than that of the original cube,
Finding the surface area of a primitive cube

Let the side length of the cube be x cm
Increased surface area = 4 × x 4 = 80
X = 5 cm
The surface area of the cube is 6 × 5 × 5 = 150 square centimeters

The surface area of a cuboid is 84cm2. Divide the cuboid into three equal cubes. The surface area of a cube is______ cm2．

A: the surface area of a small cube is 36 square centimeters

If the height of a cube is increased by 4cm, it will become a cuboid. The surface area of the cuboid is increased by 80cm