Question

Аквариум имеет форму прямоугольного параллелепипеда. Объём аквариума 40 л, его длина – 5 дм, ширина – 4 дм. Найди сумму площадей боковых граней аквариума.​

Answer 1

Ответ:

16дм

Пошаговое объяснение:

ширина и есть боковые грани их всего четыре

Answer 2

Calculation of the Sum of the Areas of the Aquarium's Side Faces

To find the sum of the areas of the side faces of the rectangular parallelepiped aquarium, we need to calculate the areas of each face and then add them together.

Given information: - Volume of the aquarium: 40 liters - Length of the aquarium: 5 dm - Width of the aquarium: 4 dm

To calculate the sum of the areas, we need to find the area of each face. The aquarium has six faces, but we are only interested in the side faces.

The formula to calculate the area of a rectangle is: Area = Length × Width

Since the aquarium is a rectangular parallelepiped, the opposite side faces have the same area. Therefore, we only need to calculate the area of one side face and then multiply it by 2 to get the sum of the areas of the side faces.

Let's calculate the area of one side face:

Area of one side face = Length × Width

Substituting the given values: Area of one side face = 5 dm × 4 dm

To find the sum of the areas of the side faces, we multiply the area of one side face by 2:

Sum of the areas of the side faces = 2 × (Area of one side face)

Now, let's calculate the area of one side face and then find the sum of the areas of the side faces.

Area of one side face: Area of one side face = 5 dm × 4 dm = 20 dm²

Sum of the areas of the side faces: Sum of the areas of the side faces = 2 × (Area of one side face) = 2 × 20 dm² = 40 dm²

Therefore, the sum of the areas of the side faces of the aquarium is 40 dm².