10.4 ­ Perimeters and Areas of Similar Figures.notebook
April 27, 2015
4/27: Warm Up
Find the area of each regular polygon:
1.
2.
2.4 yd
3.5 yd
5.4 cm
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10.4 ­ Perimeters and Areas of Similar Figures.notebook
10.4: Perimeters & Areas of Similar Figures
April 27, 2015
Date: 4/27
Ratio of Perimeters & Areas of Similar Figures
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10.4 ­ Perimeters and Areas of Similar Figures.notebook
April 27, 2015
Ex 1). Find the ratio (smaller to larger) of the perimeters and
the areas of the similar figures below:
a)
b)
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10.4 ­ Perimeters and Areas of Similar Figures.notebook
April 27, 2015
Ex 2). Find the area of the similar figure:
a) Area of smaller hexagon = 127.3 ft2
b) Area of smaller rectangle = 72 in2
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10.4 ­ Perimeters and Areas of Similar Figures.notebook
April 27, 2015
Ex 3). It will cost Maria $150 to have carpet installed in a room
that measures 12 ft by 10 ft. At this rate, how much will it cost her
to have carpet installed in a similarly shaped family room with
the larger dimension 18 ft?
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10.4 ­ Perimeters and Areas of Similar Figures.notebook
April 27, 2015
Ex 4). The area of a regular nonagon is 34 m2. What is the area
of a regular nonagon with sides five times the sides of the smaller
nonagon?
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10.4 ­ Perimeters and Areas of Similar Figures.notebook
April 27, 2015
Ex 5). The areas of two similar figures are 32 m2 and 50 m2.
What is the scale factor? What is the ratio of their perimeters?
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10.4 ­ Perimeters and Areas of Similar Figures.notebook
April 27, 2015
Ex 6). The areas of two similar rectangles are 1875 ft2 and 135 ft2.
What is the ratio of their perimeters?
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10.4 ­ Perimeters and Areas of Similar Figures.notebook
April 27, 2015
Homework:
pg. 671 #1 – 4, 9 – 14, 18 – 22(e)
10.1 ­ 10.4 Quiz ­ Wednesday
Yellow Study Guide due Wednesday
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