Question

2. Длина прямоугольного параллелепипеда равна 50дм, Ширина на 8 см меньше длины, а Высота составляет 5/7 ширины. Найди объём и площадь поверхности этого прямоугольного параллелепипеда. СРОЧНО!!​

Answer 1

Ответ:

1) 50-8=42(cм) - в

2) 42:7*5=30(см) - с

3) 50*42=2100(см2) - S

4) 2100*30=63000(см3) - V

Answer 2

Ширина=50-8=42дм
Высота равна42*5/7=30дм
Площадь равна 42*50=2100 квадратных дециметров
Объём равен42*30*50=63000 Кубических дециметров

Answer 3

Calculation of Volume and Surface Area of a Rectangular Prism

To find the volume and surface area of a rectangular prism, we need to know its length, width, and height. Let's calculate the volume and surface area of the given rectangular prism.

Given information: - Length = 50 dm - Width = Length - 8 cm - Height = 5/7 * Width

Calculation of Width:

To find the width, we need to convert the length and width to the same unit. Let's convert the length from decimeters (dm) to centimeters (cm).

1 decimeter (dm) = 10 centimeters (cm)

So, the length in centimeters is: Length = 50 dm * 10 cm/dm = 500 cm

Now, we can calculate the width: Width = Length - 8 cm = 500 cm - 8 cm = 492 cm

Calculation of Height:

The height is given as 5/7 of the width. Let's calculate the height: Height = 5/7 * Width = 5/7 * 492 cm

Now, we have all the dimensions required to calculate the volume and surface area.

Calculation of Volume:

The volume of a rectangular prism is given by the formula: Volume = Length * Width * Height

Substituting the values: Volume = 500 cm * 492 cm * (5/7 * 492 cm)

Calculation of Surface Area:

The surface area of a rectangular prism is given by the formula: Surface Area = 2 * (Length * Width + Length * Height + Width * Height)

Substituting the values: Surface Area = 2 * (500 cm * 492 cm + 500 cm * (5/7 * 492 cm) + 492 cm * (5/7 * 492 cm))

Let's calculate the volume and surface area using the given dimensions.

Calculation:

Volume = 500 cm * 492 cm * (5/7 * 492 cm) Surface Area = 2 * (500 cm * 492 cm + 500 cm * (5/7 * 492 cm) + 492 cm * (5/7 * 492 cm))

Calculating the above expressions will give us the volume and surface area of the rectangular prism.