Answer:
To find the area of a box, we can consider the following steps:
1. Identify the dimensions:
The box has a length of 10 cm, a width of 9 cm, and a height of 10 cm.
2. Understand the formula for calculating the surface area of a box:
The surface area of a box can be found by adding the areas of all its faces. In this case, we have a rectangular box, so we can calculate the area of each face separately.
3. Calculate the area of each face:
The box has six faces: a top face, a bottom face, a front face, a back face, a left face, and a right face. The top and bottom faces have the same dimensions, as well as the front and back faces, and the left and right faces.
4. Calculate the area of one face:
To calculate the area of one face, we multiply the length by the width. In this case, the area of each face is 10 cm * 9 cm = 90 cm^2.
5. Calculate the total surface area:
To find the total surface area, we add up the areas of all the faces. Since there are six faces, the total surface area is 6 * 90 cm^2 = 540 cm^2.
Therefore, the area of the box is 540 cm^2.
Explanation: