look at the area model and complete. 1.clark25.weebly.com/uploads/1/3/1/8/13180697/19.pdf · look...

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Area and PerimeterCHAPTER

19Worksheet 1 AreaLook at the area model and complete.

1.

�

3 5 1 1

5

Draw an identical shape on the square grid paper.

2.

14(M)MIF2015CC_RTG3B_Ch19.indd 209 4/23/13 7:24 PM

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Chapter 19 Lesson19.1

Make a figure using four squares ( ) and four half-squares ( ) .

3.

Each square ( ) is 1 square unit. Find the area of each figure.

Example

Area5 squareunits

Areaistheamountofsurfacecovered.Itismeasuredinsquare units.

6

4.

Area5 squareunits


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5.

Area5 squareunits

6.

Area5 squareunits

Each square ( ) is 1 square unit.

Each half-square ( ) is 1_ 2 square unit.

Find the area of each figure.

Example

Area5 squareunits5

7.

Area5 squareunits


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Each square ( ) is 1 square unit.

Each half-square ( ) is 1_ 2 square unit.


8.

Area5 squareunits

9.

Area5 squareunits

Draw and color two figures each with an area of 8 square units.

Use as 1 square unit and as 1_ 2 square unit.

10.


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Worksheet 2 Square Units (cm2 and in.2)Find the area of each shaded figure.

Example

Thesquare centimeter(cm2)isametricunitofmeasureforarea.Theareaofeach is1squarecentimeter.

1 cm

1 cm

8Areaoftheshadedfigure5 cm2

1.

1 cm

1 cm 2.

1 cm

1 cm

Areaoftheshadedfigure Areaoftheshadedfigure

5 cm2 5 cm2

3.

1 cm

1 cm

Areaoftheshadedfigure5 cm2


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Find the area of each shaded figure.

Example

Thesquare inch (in.2) isacustomaryunitofmeasureforarea.Theareaofeach is1squareinch.

1 in.

1 in.

Areaoftheshadedfigure5 in.29

4.

1 in.

1 in.


5.

1 in.

1 in.


Theseinchsquaresaresmallerthaninreallife.


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Worksheet 3 Square Units (m2 and ft2)Find the area of each shaded figure.

Example

Thesquare meter (m2)isalsoametricunitofmeasureforarea.1squaremeter(m2)islargerthan1squarecentimeter(cm2).

1 m

1 m

Areaoftheshadedfigure5 m29

1.

1 m

1 m


2.

1 m

1 m



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Find the area of the shaded figure.

3.

1 m

1 m


Find the area of each shaded figure.

Example

Thesquare foot (ft2) isalsoacustomaryunitofmeasureforarea.1squarefoot(ft2)islargerthan1squareinch(in.2).

1 ft

1 ft

Areaoftheshadedfigure5 ft29

4.

1 ft

1 ft

Areaoftheshadedfigure5 ft2


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Worksheet 4 Perimeter and AreaFind the perimeter of each shaded figure.

Example

Theperimeter ofthefigureisthedistancearoundit.

1 cm

1 cm

Perimeteroftheshadedfigure5 cm10

1.

1 cm

1 cm

Perimeteroftheshadedfigure5 cm

2.

1 in.

1 in.

Perimeteroftheshadedfigure5 in.

Theseinchsquaresaresmallerthaninreallife.


Chapter 19 Lesson 1218

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Find the perimeter of the shaded figure.

3.

1 m

1 m

Perimeteroftheshadedfigure5 m

Look at the figures. Then fill in the blanks.

1 m

1 m

A

B

4. PerimeterofFigureA5 m

AreaofFigureA5 m2

5. PerimeterofFigureB5 m

AreaofFigureB5 m2


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6. DoFiguresAandBhavethesamearea?

7. DoFiguresAandBhavethesameperimeter?

Find the area of each figure in two ways.

Example

5squares

3squares

a. Bycounting:

Area5 squareunits

b. Bymultiplying:

Area5 3

5 squareunits

15

5 3

15

8. a. Bycounting:

Area5 squareunits

3squares

4squares b. Bymultiplying:

Area5 3

5 squareunits



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9.

2m 6m

3m A B

AreaofA5 3 5 m2

AreaofB5 3 5 m2

Areaoffigure5 1

5 m2

10.

5m 3m

2m C D

AreaofC5 3 5 m2

AreaofD5 3 5 m2

Areaoffigure5 1

5 m2


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Draw a line or lines to separate the figure into smaller rectangles or squares.

Example

Firstway Secondway

11.

Firstway Secondway Thirdway

12.

Firstway Secondway Thirdway


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13. Jamesneedssquare-inchmosaictilestocovertheareaofthefigureshown.

3in.

8in.

7in.

10in.

a. HowmanymosaictilesdoesJamesneedtobuy?

b. Eachmosaictilecosts$1.HowmuchdoesJamesspendonthemosaictiles?


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Find the area of the figure by separating it into smaller squares and rectangles. Add the areas to solve.

14.

2in.

6in.

2in.

5in.

15.

12cm

9cm

7cm

9cm

3cm

3cm2cm



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16 . Drawtwodifferentrectangleswiththesameperimeterof16squares.Statetheareaofeachrectangle.

1unit

1unit


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Worksheet 5 More Perimeter Find the perimeter of each figure.

Example5cm

5cm

2cm2cm

Perimeter5 1 1 1

5 cm

5

14

2 5 2

Tofindtheperimeterofafigure,weaddupthelengthsofallitssides.

1. 6cm

6cm6cm

6cm 6cm

Perimeter5 1 1 1

5 cm

2. 13cm

12cm

5cm

Perimeter5 1 1

5 cm



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Find the perimeter of each figure.

3. 9 in.

7 in.7 in.

Perimeter5 1 1

5 in.

4.

6m

4m

4m

3m

5m

Perimeter5 1 1 1 1

5 m

5. 8ft

2ft

6ft

6ft

6ft

10ft

Perimeter5 1 1 1 1 1

5 ft


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Solve.

6. Sharonhasasquarepieceofpaperthathasasidelengthof4centimeters.Whatistheperimeterofthepieceofpaper?

4cm

7. Jeffputsafencearoundarectangulargardenthatmeasures5metersby7meters.HowmanymetersoffencingdoesJeffuse?

7m

5m



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Solve.

8. Mavispastesribbonaroundtherectangularboxtwice.Theboxmeasures5centimetersby9centimeters.WhatisthelengthoftheribbonthatMavisuses?

9 cm

5 cm


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