Perimeter of Polygons

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Show your work for each problem.

1.
What is the perimeter of a rectangle with length 6 cm and width 4 cm?
1. a)10 cm
2. b)12 cm
3. c)20 cm
4. d)24 cm
2.
A triangle has sides of 5 m, 7 m, and 8 m. What is its perimeter?
1. a)40 m
2. b)20 m
3. c)12 m
4. d)15 m
3.
A square has sides of 9 cm each. What is its perimeter?
4.
What is the perimeter of a rectangle with length 10 m and width 3 m?
5.
Which formula correctly calculates the perimeter of a rectangle?
1. a)
2. b)
3. c)
4. d)
6.
A regular pentagon has sides of 7 cm each. What is its perimeter?
7.
A regular hexagon has a perimeter of 48 cm. What is the length of each side?
1. a)4 cm
2. b)8 cm
3. c)6 cm
4. d)12 cm
8.
A rectangle has a perimeter of 34 cm and a length of 11 cm. What is its width?
9.
Find the perimeter of a rectangle with length 15 m and width 8 m.
10.
A garden is shaped like a regular octagon with each side measuring 5 m. How much fencing is needed to surround it?
11.
A quadrilateral has sides of 6 cm, 9 cm, 7 cm, and 10 cm. What is its perimeter?
12.
A rectangle has a perimeter of 50 m. If the length is 3 times the width, what is the width?
13.
A rectangular garden is 20 m long. If 68 m of fencing surrounds it completely, what is the garden's width?
14.
An equilateral triangle and a square have the same perimeter. If the triangle has sides of 12 cm, what is the side length of the square?
15.
A picture frame is 25 cm by 35 cm. How much wood is needed for the frame?
1. a)60 cm
2. b)120 cm
3. c)70 cm
4. d)875 cm
16.
A farmer has 100 m of fencing. He wants to build a rectangular pen with maximum area. If the length is 25 m, what is the width?