Final answer:
The total surface area of 4 boxes, each being 12 cm wide, 12 cm long, and 15 cm tall, is 4032 cm².
Step-by-step explanation:
To calculate the total surface area of 4 such boxes, we first need to determine the surface area of one box. Since a box has 6 faces and the given box is 12 cm wide, 12 cm long, and 15 cm tall, we can calculate the surface area of each face.
- There are two faces with an area of width × height: 2 × (12 cm × 15 cm) = 360 cm²
- There are two faces with an area of width × length: 2 × (12 cm × 12 cm) = 288 cm²
- There are two faces with an area of length × height: 2 × (12 cm × 15 cm) = 360 cm²
Adding these areas together gives us the total surface area for one box: 360 cm² + 288 cm² + 360 cm² = 1008 cm².
Since we have 4 such boxes, we multiply the surface area of one box by 4: 1008 cm² × 4 = 4032 cm².
Therefore, the total surface area of 4 such boxes is 4032 cm².