Similar Figures and Surface Area Practice Complete this assessment to review what you’ve learned. It will not count toward your grade. 4 of 54 of 5 Items Question Use the image to answer the question. If the cube displayed is dilated by a scale factor of 14 , what would be the surface area of the dilated cube? (1 point) cm2 Remaining Attempts : 3 Skip to navigation page 16 of 17 Formula keypad has been closed. Press Control + Backslash to open it again.Formula keypad has been closed. Press Control + Backslash to open it again.Formula keypad has been closed. Press Control + Backslash to open it again.

1 answer

To find the surface area of the dilated cube, we first need to establish the surface area of the original cube and then apply the scale factor.

  1. Determine the original surface area of the cube: The surface area \( (SA) \) of a cube is given by the formula: \[ SA = 6s^2 \] where \( s \) is the side length of the cube.

  2. Apply the scale factor: If the cube is dilated by a scale factor of \( k \), the new side length will be: \[ s' = k \cdot s \] The surface area of the dilated cube can be calculated using the new side length: \[ SA' = 6(s')^2 = 6(k \cdot s)^2 = 6k^2s^2 \] Therefore, the surface area of the dilated cube is \( k^2 \) times the surface area of the original cube.

  3. Calculate the surface area of the dilated cube: Given the scale factor \( k = 14 \), the new surface area will be: \[ SA' = 6(14^2) \cdot s^2 \] \[ SA' = 6 \cdot 196 \cdot s^2 \] \[ SA' = 1176 \cdot s^2 \]

  4. Final Answer: The surface area of the dilated cube is \( 1176 \cdot s^2 \), where \( s^2 \) is the area based on the original cube's side length.

If you have the value for \( s^2 \), you can multiply that by 1176 to get the specific numerical surface area. Otherwise, the surface area of the dilated cube in terms of \( s \) is \( 1176s^2 \) cm².