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Triangular pyramid BB is the image of triangular pyramid AA after dilation by a scale factor of 3333. If the surface area of triangular pyramid AA is 55in255\,\text{in}^2, find the surface area of triangular pyramid BB, the image.

Full solution

Q. Triangular pyramid BB is the image of triangular pyramid AA after dilation by a scale factor of 3333. If the surface area of triangular pyramid AA is 55in255\,\text{in}^2, find the surface area of triangular pyramid BB, the image.
  1. Cube Scale Factor: Since the scale factor for the dilation is 3333, we need to cube this scale factor to find the change in surface area because surface area is a two-dimensional measurement and dilation affects each dimension of the shape.
  2. Calculate New Surface Area: Calculate the new surface area by cubing the scale factor: 333=35,93733^3 = 35,937.
  3. Multiply Original Surface Area: Multiply the original surface area of triangular pyramid A by the cubed scale factor to get the surface area of triangular pyramid B: 55 in2×35,93755 \text{ in}^2 \times 35,937.

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