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Question
Henry would like to enlarge a photo. The original photo has a length of 5 inches and a width of 8 inches. Henry will enlarge the photo using a scale factor of 3.(3 points)
Determine the dimensions and area of the study card.

7th Grade Math Formula Sheet

Length of the enlarged photo =
inches

Width of the enlarged photo =
inches

Area of the enlarged photo =
square inches

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1 answer

To find the dimensions and area of the enlarged photo, we can use the given scale factor.

  1. Calculate the dimensions of the enlarged photo:

    • Length: \[ \text{Length of enlarged photo} = \text{Original length} \times \text{Scale factor} = 5 \text{ inches} \times 3 = 15 \text{ inches} \]

    • Width: \[ \text{Width of enlarged photo} = \text{Original width} \times \text{Scale factor} = 8 \text{ inches} \times 3 = 24 \text{ inches} \]

  2. Calculate the area of the enlarged photo:

    • Area: \[ \text{Area of enlarged photo} = \text{Length} \times \text{Width} = 15 \text{ inches} \times 24 \text{ inches} = 360 \text{ square inches} \]

Final Results:

  • Length of the enlarged photo = 15 inches
  • Width of the enlarged photo = 24 inches
  • Area of the enlarged photo = 360 square inches