Question

Из 3 одинаковых кубиков с ребром 3 см сложили фигуру.какую площадь покрасили

Answer 1

Внешняя площадь, те. площадь которую покрасили будет на 4 стороны меньше от суммы всех сторон 3 кубиков.

Площадь одной стороны кубика = 3*3= 9 см2

Всего у каждого кубика 6 сторон, т.е. у 3 кубиков 3*6 = 18 сторон.

Покрасили 18-4 = 14 сторон, или 14*9=126 см2

Ответ: 126 см2

Answer 2

Calculating the Painted Area of the Figure

To calculate the painted area of the figure made from 3 identical cubes with a side length of 3 cm, we can start by determining the total surface area of the figure.

Each cube has 6 faces, and since they are identical, we can calculate the total surface area of one cube and then multiply it by 3 to account for all three cubes.

The formula to calculate the surface area of a cube is: Surface Area = 6 * (side length)^2

Substituting the given side length of 3 cm into the formula: Surface Area of One Cube = 6 * (3 cm)^2 = 54 cm^2

Now, to find the total painted area of the figure made from the 3 cubes, we multiply the surface area of one cube by 3: Total Painted Area = 54 cm^2 * 3 = 162 cm^2

So, the painted area of the figure made from 3 identical cubes with a side length of 3 cm is 162 square centimeters.