The ratio of side lengths for two similar cubes is 2/5 . Determine the ratios for each of the following. Show your work or explain how you got your answers. the perimeter of one face of the smaller cube compared to the perimeter of one face of the larger cube the total surface area of the smaller cube compared to the total surface area of the larger cube the volume of the smaller cube compared to the volume of the larger cube

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Given the ratio of side lengths of two similar cubes is \( \frac{2}{5} \), we can derive the ratios for perimeter, surface area, and volume.

  1. Perimeter of one face:

    • The perimeter of a face of a cube is \( 4 \times \text{side length} \).
    • Using the ratio of side lengths \( \frac{\text{smaller}}{\text{larger}} = \frac{2}{5} \), the ratio of perimeters is: \[ \frac{\text{perimeter of smaller}}{\text{perimeter of larger}} = \frac{4 \times \text{side length of smaller}}{4 \times \text{side length of larger}} = \frac{\text{side length of smaller}}{\text{side length of larger}} = \frac{2}{5} \]
  2. Total surface area:

    • The total surface area of a cube is \( 6 \times \text{side length}^2 \).
    • The ratio of surface areas is: \[ \frac{\text{surface area of smaller}}{\text{surface area of larger}} = \frac{6 \times (\text{side length of smaller})^2}{6 \times (\text{side length of larger})^2} = \frac{(\text{side length of smaller})^2}{(\text{side length of larger})^2} = \left(\frac{2}{5}\right)^2 = \frac{4}{25} \]
  3. Volume:

    • The volume of a cube is \( \text{side length}^3 \).
    • The ratio of volumes is: \[ \frac{\text{volume of smaller}}{\text{volume of larger}} = \frac{(\text{side length of smaller})^3}{(\text{side length of larger})^3} = \left(\frac{2}{5}\right)^3 = \frac{8}{125} \]

Final Ratios:

  • Perimeter of smaller to larger: \( \frac{2}{5} \)
  • Surface area of smaller to larger: \( \frac{4}{25} \)
  • Volume of smaller to larger: \( \frac{8}{125} \)