Question

Длина подарочной коробки 25см ,ширина 12см, а высота 5см. Чему должна быть равна наименьшая площадь оберточной бумаги для этой коробки?

Answer 1

25*12*2 + 12*5*2 + 25*5*2 = 600+120+250=970(см²)

Answer 2

Площадь боковой поверхности равна произведению периметра основания на высоту.
2*(25*12+12*5+5*25)=970 кв.см
ответ: 970 кв.см

Answer 3

Calculation of Wrapping Paper Area

To calculate the minimum area of wrapping paper needed for the given gift box, we need to find the surface area of the box. The surface area of a rectangular box can be calculated by adding the areas of all its sides.

Given dimensions: - Length of the gift box = 25 cm - Width of the gift box = 12 cm - Height of the gift box = 5 cm

To calculate the surface area, we need to consider the following sides of the box: 1. Top and bottom: The top and bottom sides of the box have the same dimensions, so we can calculate the area of one side and multiply it by 2. 2. Front and back: The front and back sides of the box have the same dimensions, so we can calculate the area of one side and multiply it by 2. 3. Left and right: The left and right sides of the box have the same dimensions, so we can calculate the area of one side and multiply it by 2.

Let's calculate the area of each side and add them together to find the total surface area.

1. Top and bottom: - Area of one side = Length * Width - Area of both sides = 2 * (Length * Width)

2. Front and back: - Area of one side = Length * Height - Area of both sides = 2 * (Length * Height)

3. Left and right: - Area of one side = Width * Height - Area of both sides = 2 * (Width * Height)

Now, let's calculate the areas:

1. Top and bottom: - Area of one side = 25 cm * 12 cm = 300 cm² - Area of both sides = 2 * 300 cm² = 600 cm²

2. Front and back: - Area of one side = 25 cm * 5 cm = 125 cm² - Area of both sides = 2 * 125 cm² = 250 cm²

3. Left and right: - Area of one side = 12 cm * 5 cm = 60 cm² - Area of both sides = 2 * 60 cm² = 120 cm²

Total surface area = (Area of top and bottom) + (Area of front and back) + (Area of left and right) = 600 cm² + 250 cm² + 120 cm² = 970 cm²

Therefore, the minimum area of wrapping paper needed for this gift box is 970 cm².