The box has 6 sides:
1. Top and bottom: 2 sides with dimensions 8cm by 5cm each.
2. Front and back: 2 sides with dimensions 8cm by 3cm each.
3. Left and right sides: 2 sides with dimensions 5cm by 3cm each.
Let's calculate the area of each side:
1. Top and bottom: 2 sides with an area of 8cm * 5cm = 40 square centimeters each.
2. Front and back: 2 sides with an area of 8cm * 3cm = 24 square centimeters each.
3. Left and right sides: 2 sides with an area of 5cm * 3cm = 15 square centimeters each.
Now, add up the areas of all six sides to get the total surface area:
40 (top) + 40 (bottom) + 24 (front) + 24 (back) + 15 (left) + 15 (right) = 158 square centimeters
So, the surface area of the box is 158 square centimeters.
