The surface area of a rectangular parallelepiped is 441 cm², and the surface area of a cube is 2/3 of that.

The surface area of a rectangular parallelepiped is 441 cm², and the surface area of a cube is 2/3 of that. Calculate the meter of one face of the cube.

In order to find the part of an integer value, you must divide it by the denominator of the fraction and multiply by its numerator.

Let us determine what is the surface area of a cube, provided that it occupies 2/3 of the 441 cm² of a rectangular parallelepiped:

441: 3 * 2 = 147 * 2 = 294 cm².

S cube = 6а². Let us express the length of the side:

a² = S: 6 = 294: 6 = 49.

a = √49 = 7 cm.

Each face of a cube is represented by a square, and is calculated by the formula:

P = 4a = 4 * 7 = 28 cm.