Cara and Beejal would like to reduce a poster into small study card. The original poster has a length of 36 inches and a width of 24 inches. Cara and Beejal will reduce the poster using a scale factor of 1/6

.(3 points)
Determine the dimensions and area of the study card.

7th Grade Math Formula Sheet

Length of the new study card =
inches

Width of the new study card =
inches

Area of the new study card =
square inches

1 answer

To reduce the dimensions of the original poster using a scale factor of \( \frac{1}{6} \), we can apply the scale factor to both the length and the width of the poster.

Step 1: Calculate the dimensions of the study card

  1. Length of the new study card: \[ \text{Length} = \text{Original Length} \times \text{Scale Factor} \] \[ \text{Length} = 36 \text{ inches} \times \frac{1}{6} = 6 \text{ inches} \]

  2. Width of the new study card: \[ \text{Width} = \text{Original Width} \times \text{Scale Factor} \] \[ \text{Width} = 24 \text{ inches} \times \frac{1}{6} = 4 \text{ inches} \]

Step 2: Calculate the area of the study card

The area of a rectangle is calculated as: \[ \text{Area} = \text{Length} \times \text{Width} \] \[ \text{Area} = 6 \text{ inches} \times 4 \text{ inches} = 24 \text{ square inches} \]

Final Results:

  • Length of the new study card = 6 inches
  • Width of the new study card = 4 inches
  • Area of the new study card = 24 square inches

These are the dimensions and area of the study card.