Question

Объем прямоугольнонго паралепипеда 720дм в кубе длина 15дм а ширина 8дм вычислите площадь поверхности этого паралепипеда

Answer 1

Ответь очень легкий это число 6

Answer 2

Calculation of Surface Area of a Rectangular Prism

To calculate the surface area of a rectangular prism, we need to find the area of each face and then sum them up.

Given: - Volume of the rectangular prism: 720 dm³ - Length: 15 dm - Width: 8 dm

We can find the height of the rectangular prism by dividing the volume by the product of the length and width:

Height = Volume / (Length * Width)

Height = 720 dm³ / (15 dm * 8 dm)

Height = 720 dm³ / 120 dm²

Height = 6 dm

Now that we have the dimensions of the rectangular prism (length, width, and height), we can calculate the surface area.

Surface Area Calculation

The surface area of a rectangular prism can be calculated using the formula:

Surface Area = 2lw + 2lh + 2wh

where: - l = length - w = width - h = height

Substituting the given values into the formula:

Surface Area = 2 * 15 dm * 8 dm + 2 * 15 dm * 6 dm + 2 * 8 dm * 6 dm

Surface Area = 240 dm² + 180 dm² + 96 dm²

Surface Area = 516 dm²

Therefore, the surface area of the rectangular prism is 516 square decimeters.