Question

В коробку размером 9см×15 см×60 см плотно уложили кубики размером 3см×3см×3см,заполнив полностью коробку.Затем из коробки доствли 90 кубиков.Сколько кубиков осталось в коробке?​

Answer 1

Ответ:

210 кубиков

Пошаговое объяснение:

Фотография.

Удачи☘️.

Answer 2

Problem Analysis

We have a box with dimensions 9cm x 15cm x 60cm. The box is completely filled with cubes that have dimensions 3cm x 3cm x 3cm. After removing 90 cubes from the box, we need to determine how many cubes are left in the box.

Solution

To find the number of cubes left in the box, we need to calculate the total number of cubes that can fit in the box and subtract the number of cubes that were removed.

Calculating the Number of Cubes that Fit in the Box

To calculate the number of cubes that fit in the box, we need to find the volume of the box and divide it by the volume of each cube.

The volume of the box is given by the formula:

Volume of the box = length x width x height

Substituting the given dimensions, we have:

Volume of the box = 9cm x 15cm x 60cm

Calculating the volume of the box:

Volume of the box = 8100 cm³

The volume of each cube is given by the formula:

Volume of each cube = length x width x height

Substituting the given dimensions, we have:

Volume of each cube = 3cm x 3cm x 3cm

Calculating the volume of each cube:

Volume of each cube = 27 cm³

To find the number of cubes that fit in the box, we divide the volume of the box by the volume of each cube:

Number of cubes that fit in the box = Volume of the box / Volume of each cube

Substituting the calculated values:

Number of cubes that fit in the box = 8100 cm³ / 27 cm³

Calculating the number of cubes that fit in the box:

Number of cubes that fit in the box = 300 cubes

Calculating the Number of Cubes Left in the Box

To find the number of cubes left in the box, we subtract the number of cubes that were removed from the number of cubes that fit in the box:

Number of cubes left in the box = Number of cubes that fit in the box - Number of cubes removed

Substituting the calculated values:

Number of cubes left in the box = 300 cubes - 90 cubes

Calculating the number of cubes left in the box:

Number of cubes left in the box = 210 cubes

Answer

There are 210 cubes left in the box.