Question

Для изготовления поделки Вася из 12 одинаковых кубиков сложил прямоугольный параллелепипед высотой в 4 кубика и длиной в 3 кубика.После чего обклеил его цветной бумагой .Сколько квадратных метров бумаги понадобилось Васе ,если на оклеивание одного кубика уходит 9 квадратных метров? Спасибо! (А) 57м2 (Б)57,5м2 (В)108м2 (Г) 109м2 С пояснением

Answer 1

С одной стороны получается 12 кубиков, значит с 4 равных сторон будет 48 кубиков, +в основании 9*2=18, 48+18=66 это количество граней кубиков в параллелепипеде, 66*9=594м²

Answer 2

Calculation of Paper Needed for Vasya's Craft Project

To calculate the amount of paper needed for Vasya's craft project, we need to determine the surface area of the rectangular parallelepiped formed by the 12 identical cubes.

Given: - Vasya used 12 identical cubes to create a rectangular parallelepiped. - The height of the parallelepiped is 4 cubes. - The length of the parallelepiped is 3 cubes.

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

Calculation Steps:

1. Calculate the area of the top and bottom faces: - The top face has dimensions of 3 cubes by 4 cubes, so its area is 3 * 4 = 12 square cubes. - The bottom face has the same dimensions and area as the top face, which is also 12 square cubes.

2. Calculate the area of the front and back faces: - The front face has dimensions of 3 cubes by 12 cubes, so its area is 3 * 12 = 36 square cubes. - The back face has the same dimensions and area as the front face, which is also 36 square cubes.

3. Calculate the area of the left and right faces: - The left face has dimensions of 4 cubes by 12 cubes, so its area is 4 * 12 = 48 square cubes. - The right face has the same dimensions and area as the left face, which is also 48 square cubes.

4. Sum up the areas of all the faces: - Total surface area = (top + bottom) + (front + back) + (left + right) - Total surface area = (12 + 12) + (36 + 36) + (48 + 48) - Total surface area = 120 square cubes.

Now, we know that it takes 9 square meters of paper to cover one cube. To find the total amount of paper needed, we need to convert the surface area from square cubes to square meters.

Conversion of Surface Area to Square Meters:

Since we don't have the exact dimensions of each cube, we cannot directly convert square cubes to square meters. However, we can assume that each cube has a side length of 1 meter. This assumption allows us to convert square cubes to square meters.

1 square cube is equal to 1 square meter (when each cube has a side length of 1 meter).

Therefore, the total surface area of 120 square cubes is equal to 120 square meters.

Answer:

Based on the given information and calculations, Vasya would need 120 square meters of colored paper for his craft project.

Please note that the search results did not provide any relevant information or sources to verify the calculations.