To calculate and measure perimeter

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Mathematics - 2D Perimeter and Area

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2

Calculate the perimeter of the following shapes. You can also draw these shapes in your book.

Simple shapes

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Question 1

Calculate the perimeter of the following shapes.

Note: not drawn to scale

4

38 mm

20 mm

5 m

170 mm

80 mm

20 mm

38 mm

170 mm

Look carefully at the units. Note: not drawn to scale

Question 2

Calculate the perimeter of the following shapes.

5

16 cm

20 cm

14 cm

100 cm

50 cm

14 cm

Compound shapes

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Look carefully at the units. Note: not drawn to scale

Question 3

Calculate the perimeter of this compound shape.

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7

32 cm

60 cm

28 cm

18 cm

Image credit: Pixabay

40 cm

Calculate the missing length first.

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Look carefully at the units. Note: not drawn to scale

Question 4

Calculate the perimeter of this compound shape.

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8

18 cm

44 cm

19 cm

22 cm

16 cm

Image credit: Pixabay

Calculate the missing length first.

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Question 5

Calculate the perimeter of this compound rectilinear shape.

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Look carefully at the units. Note: not drawn to scale

15 m

13 m

13 m

11 m

9 m

13 m

2 m

2 m

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Worksheet solutions

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Simple shapes

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Question 1

Calculate the perimeter of the following shapes.

Look carefully at the units. Note: not drawn to scale

12

38 mm

20 mm

5 m

170 mm

80 mm

38 + 38 + 20 + 20 = 116 mm

5 + 5 + 5 + 5 = 25 m

or

5 x 4 = 25 m

170 + 170 + 80 = 420 mm

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Question 2

Calculate the perimeter of the following shapes.

Look carefully at the units. Note: not drawn to scale

14 + 16 + 14 + 20 = 64 cm

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1 + 1 + 0.5 + 0.5 = 3 m

or

100 + 100 + 50 + 50 = 300 cm

13

16 cm

20 cm

14 cm

1 m

50 cm

Compound shapes

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Question 3

Calculate the perimeter of this compound shape.

Look carefully at the units. Note: not drawn to scale

Calculate the missing units first.

40 - 18 = 22 cm

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15

32 cm

60 cm

28 cm

18 cm

Image credit: Pixabay

40 cm

22 cm

40 + 60 + 22 + 32 + 18 + 28 = 200 cm

Question 4

Calculate the perimeter of this compound shape.

Look carefully at the units. Note: not drawn to scale

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16

18 cm

44 cm

19 cm

22 cm

16 cm

Image credit: Pixabay

Calculate the missing length first.

22 + 16 = 38 cm

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38 cm

38 + 44 + 22 + 18 + 16 + 19 = 157 cm

Question 5

Calculate the perimeter of this compound rectilinear shape.

Look carefully at the units. Note: not drawn to scale

17

15 m

13 m

13 m

11 m

9 m

13 m

2 m

2 m

15 + 13 + 13 + 2 + 11 + 9 + 13 + 2 = 78 m

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Developed in partnership and made possible �by joint funding from Commonwealth, state �and territory governments.

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