Objectives
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Objectives. Students will be able to apply perimeter, area, and circumference formulas to solve problem. The perimeter P of a plane figure is the sum of the side lengths of the figure.

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Objectives

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Objectives

Objectives

Students will be able to apply perimeter, area, and circumference formulas to solve problem.


Objectives

The perimeterP of a plane figure is the sum of the side lengths of the figure.

The areaA of a plane figure is the number of non-overlapping square units of a given size that exactly cover the figure.


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Remember!

Perimeter is expressed in linear units, such as inches (in.) or meters (m).

Area is expressed in square units, such as square centimeters (cm2).


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The basebcan be any side of a triangle.

The heighthis a segment forms a right angle with the base. The height may be a side of the triangle or in the interior or the exterior of the triangle.


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What’s my base and what’s my height?


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Perimeter and Area with Algebra

Find the area and perimeter of each figure.

1.

2.

x2+ 4x; 4x + 8

10x; 4x + 16


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The circumference of a circle is the distance around the circle.

“perimeter of the circle”


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 (Pi) is often approximated as 3.14 or .


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Find circumference and area of circles

Find the area and perimeter of each circle.

1.

2.


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Find Circumference and Areas of Circles


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Find Circumference and Areas of Circles


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1.5 HW answer

1.12 ft

2.6 ft2

3.2.4 ft or ft

4.P 9.6 m; A 5.76 m2

5.P 2x 20; A 7x 21

6.circumference

7.C 44 mi; A 154 mi2

8. 2 in.

9. 19 m

10. 12.5 mm


Objectives

Apply Formulas of Perimeter, Circumference and Areas


Objectives

Apply Formulas of Perimeter, Circumference and Areas


Objectives

Group wprk- Application in Real LIfe

A landscaper is installing a brick patio in the backyard. He is building a rock wall around the perimeter of the patio.

1. What is the area needed for the brick patio?

2. What is the perimeter needed for building the brick wall?

28.56ft.


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