### Home > ACC6 > Chapter cc17 > Lesson cc17.3.1 > Problem7-88

7-88.

On graph paper, draw a rectangle with a width of 5 units and a length of 7 units. 7-88 HW eTool (Desmos)  Homework Help ✎

1. Draw a new rectangle that is an enlarged copy of your original rectangle and has a length of 13 units.

Notice that the side 7 units long corresponds to the side 13 units long.

2. Show how you can calculate the width of your new rectangle.

• What number did you multiply 7 units by to get 13 units?
Use this same multiplier to calculate the new enlarged width.

• $\frac{13}{7}\approx\ 1.86$

Use $1.86$ to find the new width of the rectangle.

$5(1.86) = 9.3 \text{ units}$

Use the eTool below to help you better understand how scale factors work.
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