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You will use the ratio of two similar figures to find their perimeter and area.
Theorem 10-7 If the similarity ratio of two similar figures is a / b, then (1)the ratio of their perimeters is a / b (2) the ratio of their areas is a 2 / b 2 Perimeters and Areas of Similar Figures
Find the ratio for the perimeter for the following similar figures. 5m 13m 5 / 13
Now, find the ratio for the area for the following similar figures. 5m 13m 25 / 169
If the area of the larger figure is 439m 2, find the area of the smaller figure. 5m 13m 25 / 169 = x / 439 169x = 10975 169 169 x = 65m 2
Assignment Workbook Page 445 all
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