Question

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)

1,458 in.2


162 in.2


54 in.2


18 in.2

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Answer 1

Scale factor = 1/3, so area scales by (1/3)^2 = 1/9.

New surface area = 486 × 1/9 = 54 in^2.