Compound Shapes Perimeter Worksheet A The worksheet is

Compound Shapes – Perimeter – Worksheet A The worksheet is in a 2 sizes.

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Ratio & Shape 1 This compound shape is made from 3 congruent rectangles. 8 cm What is the ratio width : length for one small rectangle? On the diagram we see two widths added together to equal 8 cm. How can we use this fact to find the perimeter of the compound shape? 1) a) Ratio width : length = b) Perimeter of small rectangle = c) Perimeter of compound rectangle = 12 cm a) Ratio width : length = b) Perimeter of small rectangle = c) Perimeter of compound rectangle = 2) 8 cm a) Ratio width : length = b) Perimeter of small rectangle = c) Perimeter of compound rectangle = 3) 28 cm a) Ratio width : length = b) Perimeter of small rectangle = c) Perimeter of compound rectangle = 4) 20 cm a) Ratio width : length = b) Perimeter of small rectangle = c) Perimeter of compound rectangle = 5) 12 cm

Ratio & Shape 1 This compound shape is made from 3 congruent rectangles. Ratio & Shape 2 Calculate the width : length ratio for each small rectangle. Use this fact to divide the given length. Sketch the lengths of a small rectangle to help. 8 cm What is the ratio width : length for one small rectangle? 1 : 2 1) 2) 3) On the diagram we see two widths added together to equal 8 cm. How can we use this fact to find the perimeter of the compound shape? 1) 12 cm 4) a) Ratio width : length = 1 : 3 b) Perimeter of small rectangle = 16 cm c) Perimeter of compound rectangle = 28 cm 2) 8 cm a) Ratio width : length = 1 : 5 b) Perimeter of small rectangle = 48 cm c) Perimeter of compound rectangle = 96 cm 3) 5) 25 cm Compound shape perimeter = 42 cm Compound shape perimeter = 80 cm 7) 8) 20 cm 10) a) Ratio width : length = 2 : 3 b) Perimeter of small rectangle = 20 cm c) Perimeter of compound rectangle = 44 cm 5) 12 cm Compound shape perimeter = 88 cm Compound shape perimeter = 56 cm 42 cm Compound shape perimeter = 144 cm 9) 24 cm a) Ratio width : length = 1 : 2 b) Perimeter of small rectangle = 30 cm c) Perimeter of compound rectangle = 60 cm 16 cm 6) 14 cm 28 cm 4) 10 cm Compound shape perimeter = 45 cm 9 cm Compound shape perimeter = 42 cm a) Ratio width : length = 1 : 4 b) Perimeter of small rectangle = 30 cm c) Perimeter of compound rectangle = 54 cm 20 cm 21 cm Compound shape perimeter = 102 cm 11) Compound shape perimeter = 88 cm 12) Perimeter = 78 cm Perimeter = 87 cm Perimeter = 34 cm Small rectangle area = 54 cm 2 Small rectangle area = 45 cm 2 Small rectangle area = 5. 25 cm 2

Ratio & Shape 1 This compound shape is made from 3 congruent rectangles. 8 cm What is the ratio width : length for one small rectangle? On the diagram we see two widths added together to equal 8 cm. How can we use this fact to find the perimeter of the compound shape? 1) a) Ratio width : length = b) Perimeter of small rectangle = c) Perimeter of compound rectangle = 1) 12 cm a) Ratio width : length = b) Perimeter of small rectangle = c) Perimeter of compound rectangle = 2) 8 cm a) Ratio width : length = b) Perimeter of small rectangle = c) Perimeter of compound rectangle = 20 cm a) Ratio width : length = b) Perimeter of small rectangle = c) Perimeter of compound rectangle = 12 cm a) Ratio width : length = b) Perimeter of small rectangle = c) Perimeter of compound rectangle = 4) 20 cm 5) a) Ratio width : length = b) Perimeter of small rectangle = c) Perimeter of compound rectangle = 3) 28 cm 4) a) Ratio width : length = b) Perimeter of small rectangle = c) Perimeter of compound rectangle = 2) 8 cm 3) a) Ratio width : length = b) Perimeter of small rectangle = c) Perimeter of compound rectangle = 5) 12 cm

Ratio & Shape 2 Calculate the width : length ratio for each small rectangle. Use this fact to divide the given length. Sketch the lengths of a small rectangle to help. 1) 2) 3) 10 cm Compound shape perimeter = 9 cm Compound shape perimeter = 4) 5) Compound shape perimeter = 8) 10) 4) 11) Compound shape perimeter = 10) 42 cm Compound shape perimeter = 9) 24 cm Compound shape perimeter = 25 cm 8) 20 cm 16 cm 6) Compound shape perimeter = 7) 12) 10 cm Compound shape perimeter = 14 cm Compound shape perimeter = 3) 5) 42 cm 21 cm Compound shape perimeter = 2) 9 cm Compound shape perimeter = 9) 24 cm Compound shape perimeter = 16 cm 25 cm Compound shape perimeter = 7) 1) 6) 14 cm Calculate the width : length ratio for each small rectangle. Use this fact to divide the given length. Sketch the lengths of a small rectangle to help. 20 cm 21 cm Compound shape perimeter = 11) Compound shape perimeter = 12) Perimeter = 78 cm Perimeter = 87 cm Perimeter = 34 cm Small rectangle area = Small rectangle area =

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