Areas of parallelograms triangles kites trapezoids and rho m bi
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Chapter 11.1 and 11.2 PowerPoint PPT Presentation


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Areas of parallelograms, triangles, kites, trapezoids and rho m bi. Chapter 11.1 and 11.2. Parallelogram. Find the perimeter and area of. Example 1. Perimeter and Area of a Parallelogram. A. Find the perimeter and area of. Example 1. A. 88 m; 255 m 2 B. 88 m; 405 m 2

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Chapter 11.1 and 11.2

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Areas of parallelograms triangles kites trapezoids and rho m bi

Areas of parallelograms, triangles, kites, trapezoids and rhombi

Chapter 11.1 and 11.2


Parallelogram

Parallelogram


Example 1

Find the perimeter and area of

Example 1

Perimeter and Area of a Parallelogram


Example 11

A. Find the perimeter and area of

Example 1

A.88 m; 255 m2

B.88 m; 405 m2

C.88 m; 459 m2

D.96 m; 459 m2


Example 2

Find the area of

Example 2

Area of a Parallelogram


Example 21

Find the area of

Example 2

A.156 cm2

B.135.76 cm2

C.192 cm2

D.271.53 cm2


Concept 4

Concept 4


Example 3

Example 3

Perimeter and Area of a Triangle

SANDBOXYou need to buy enough boards to make the frame of the triangular sandbox shown and enough sand to fill it. If one board is 3 feet long and one bag of sand fills 9 square feet of the sandbox, how many boards and bags do you need to buy?


Example 31

Example 3

PLAYGROUNDYou need to buy enough boards to make the frame of the triangular playground shown here and enough mulch to fill it. If one board is 4 feet long and one bag of mulch covers 7 square feet, how many boards and bags do you need to buy?

A.12 boards and 14 bags of mulch

B.11 boards and 13 bags of mulch

C.12 boards and 13 bags of mulch

D.11 boards and 14 bags of mulch


Trapezoid

Trapezoid


Example 12

Example 1

Area of a Trapezoid

SHAVINGFind the area of steel used to make the side of the razor blade shown below.

Answer:A = 2.75 cm2


Example 13

Example 1

Find the area of the side of the pool outlined below.

A.288 ft2

B.295.5 ft2

C.302.5 ft2

D.310 ft2


Example 22

Example 2

Area of a Trapezoid

OPEN ENDEDMiles designed a deck shaped like the trapezoid shown below. Find the area of the deck.


Example 23

Example 2

Ariel is carpeting a room shaped like the trapezoid shown below. Find the area of the carpet needed.

A.58 ft2

B.63 ft2

C.76 ft2

D.88 ft2


Concept 2

Concept 2


Example 3a

Example 3A

A. Find the area of the kite.

Answer: 42 ft2


Example 3b

Example 3B

B. Find the area of the rhombus.


Example 3a1

Example 3A

A. Find the area of the kite.

A.48.75 ft2

B.58.5 ft2

C.75.25 ft2

D.117 ft2


Example 3b1

Example 3B

B. Find the area of the rhombus.

A.45 in2

B.90 in2

C.180 in2

D.360 in2


Example 4

Example 4

Trapezoid QRST has an area of 210 square yards. Find the height of QRST.

A.3 yd

B.6 yd

C.2.1 yd

D.7 yd


Area of figures

Area of figures


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