Question

1) куб и квадрат - 2,5 см 2) прямоугольник шир. - 1 см, дл. - 2,5 см3) прямоугольник шир. - 2 см, дл. - 2,5 смНайти площадь куба и каждого прямоугольника и параллелепипеда.Найти их - Р и S

Answer 1

Calculation of the Cube's Area and Volume

To find the area and volume of a cube, we need to know the length of its sides. In this case, the length of each side of the cube is given as 2.5 cm.

The formula for the area of a cube is A = 6s^2, where A represents the area and s represents the length of a side. Plugging in the given value, we have:

A = 6(2.5 cm)^2

Simplifying the equation, we get:

A = 6(6.25 cm^2) = 37.5 cm^2.

Therefore, the area of the cube is 37.5 square centimeters.

The formula for the volume of a cube is V = s^3, where V represents the volume and s represents the length of a side. Plugging in the given value, we have:

V = (2.5 cm)^3

Simplifying the equation, we get:

V = 15.625 cm^3.

Therefore, the volume of the cube is 15.625 cubic centimeters.

Calculation of the Rectangles' Area

To find the area of a rectangle, we need to know the length and width of the rectangle. Let's calculate the areas of the two rectangles provided.

1) Rectangle with a width of 1 cm and a length of 2.5 cm: - The formula for the area of a rectangle is A = length x width. - Plugging in the given values, we have A = 2.5 cm x 1 cm = 2.5 cm^2.

2) Rectangle with a width of 2 cm and a length of 2.5 cm: - Using the same formula, A = 2.5 cm x 2 cm = 5 cm^2.

Therefore, the area of the first rectangle is 2.5 square centimeters and the area of the second rectangle is 5 square centimeters.

Calculation of the Parallelepiped's Volume

To find the volume of a parallelepiped, we need to know its length, width, and height. However, the height of the parallelepiped is not provided in the question. Therefore, we cannot calculate its volume without this information.

Please provide the height of the parallelepiped so that we can calculate its volume.