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104_G6U13_WB˙—» ¿º 2011.4.5 10:13 AM ˘ ` 14

104-P1-1

Areas of Similar Figures

ABCD and EFGH are similar rectangles. Find the areas of each rectangle. By how
many times is the area of rectangle EFGH larger than the area of rectangle ABCD?

E H
AD

4 cm

B 8 cm C 16 cm G
F

Step 1. What is the length of EF?

Step 2. Find the area of rectangle ABCD.

Step 3. Find the area of rectangle EFGH.

Step 4. How many times larger is the area of rectangle EFGH than the area of
rectangle ABCD?

Step 5. How many rectangles ABCD are needed to make rectangle EFGH?