To calculate the total surface area \( S \) of a cuboid, you can use the formula:
\[ S = 2lw + 2lh + 2wh \]
where:
- \( l \) is the length,
- \( w \) is the width,
- \( h \) is the height.
In this case, the length, width, and height of the cuboid are all 5 centimeters.
Substituting the values into the formula:
\[ S = 2(5)(5) + 2(5)(5) + 2(5)(5) \]
Calculating each term:
\[ = 2(25) + 2(25) + 2(25) \] \[ = 50 + 50 + 50 \] \[ = 150 , \text{cm}^2 \]
Thus, the total surface area of the storage bin is \( \text{surface area} = 150 , \text{cm}^2 \).