Section 3'1 Problem Solving: Perimeter

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Section 3.1 Problem Solving Perimeter
Perimeter (P) the outside measurement of a
figure. Units stay the same. ex. ft ?? Fencing
is an example of perimeter. Steps for finding
perimeter of any object Add all the lengths of
the sides.
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Rectangle Square P 2L 2W P 4s
s
W
L
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Find the Perimeter of the following figures.
Note Images are not drawn to scale.
1. 8 ft 8 ft
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Find the Perimeter of the following figures.
Note Images are not drawn to scale.
20 ft 2. 12 ft
5
Find the Perimeter of the following figures.
Note Images are not drawn to scale.
3. 12 in 3 in
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Find the Perimeter of the following figures.
Note Images are not drawn to scale.
4. 9 cm 16 cm 13 cm
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Find the Perimeter of the following figures.
Note Images are not drawn to scale.
5.
9 m
3 m
15 m
11 m
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Find the Perimeter of the following figures.
Note Images are not drawn to scale.
6.
5 mi
18 mi
6 mi
8 mi
2 mi
7 mi
4 mi
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7. The perimeter of a rectangle is 62 inches. If
the length is 14 inches, what is the width?
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8. The perimeter of a square is 348 cm. What is
the length of each side?
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9. The perimeter of a rectangle is 166 feet. If
the width is 37 feet, what is the length?
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10. The perimeter of the following figure is 40
m. What is the length of the missing side?
10 m
4 m
1 m
5 m
4 m
5 m
3 m
3 m
3 m
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Homework
Pg. 155 1, 2, 9 47 odd, 16, 20, 26, 36, 40, 48
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Section 3.2 Problem Solving Area Area (A)
the cover/surface of a flat object. Answers are
in square units. ex. ft2 ?? Sod and carpeting
are examples of area.
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Rectangle or square h b A base
height (or A length width)
Parallelogram h b A base height
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Find the Area of the following figures. Note
Images are not drawn to scale.
1. 8 ft 8 ft
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Find the Area of the following figures. Note
Images are not drawn to scale.
20 ft 2. 12 ft
10 ft
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Find the Area of the following figures. Note
Images are not drawn to scale.
7 cm
5.
5 cm
9 cm
4 cm
11 cm
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Find the Area of the following figures. Note
Images are not drawn to scale.
6 in
6 in
5.
4 in
12 in
22 in
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5. What is the area of a parallelogram with base
6 cm and height 8 cm?
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6. The area of a parallelogram is 168 square
feet. If the base is 24 feet, what is the height?
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7. What is the area of a square dog bed with
sides measuring 36 inches?
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8. Sue is re-carpeting her bedroom, which
measures 20 feet by 14 feet. If carpeting costs
4 per square foot, what will be the total cost
to re-carpet the bedroom?
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9. After painting the kitchen walls, Marti
decides to add a decorative border along the
center of the walls. The room measures 4 yards by
6 yards. If the border paper costs 2 per yard,
what is the total cost to add the border to the
kitchen?
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Homework
Pg. 165 1 31 odd, 35 49 odd, 12, 18, 28,
42, 44, 48