A triangular prism has a surface area of 486 in.2 . If it were dilated using a scale factor of 13 , what would the new surface area be?(1 point) Responses 54 in.2 54 in. squared 162 in.2 162 in. squared 1,458 in.2 1,458 in. squared 18 in.2 18 in. squared

1 answer

When a shape is dilated by a scale factor \( k \), the area of the shape scales by the square of that scale factor, \( k^2 \).

In this case, the scale factor is \( 13 \). So, the new area will be calculated as follows:

\[ \text{New Surface Area} = \text{Original Surface Area} \times k^2 \]

Where:

  • Original Surface Area = \( 486 , \text{in}^2 \)
  • Scale factor \( k = 13 \)

Calculating \( k^2 \):

\[ k^2 = 13^2 = 169 \]

Now, calculating the new surface area:

\[ \text{New Surface Area} = 486 \times 169 \]

Now let's perform the multiplication:

\[ 486 \times 169 = 82,014 \]

Thus, the new surface area will be:

\[ \text{New Surface Area} = 82,014 , \text{in}^2 \]

It seems like 82,014 in.² is not one of the provided responses. Let's verify if the calculations have any minor errors or possible misunderstanding from the options.

Given the significant dilation factor, usually such a large result won't match the smaller options you provided unless we missed a description. However, the accurate method shows:

The new surface area after applying the dilation is 82,014 in.² and might require a double-check on the selection options provided.