Lesson 3: They Key to Perimeter and Area

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# Lesson 3: They Key to Perimeter and Area - PowerPoint PPT Presentation

Lesson 3: They Key to Perimeter and Area. Consumer Math p. 176-179. Perimeter is the distance around a figure or region. Notice the word rim in perimeter . Remember that perimeter is the measure of the rim of a figure.

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### Lesson 3: They Key to Perimeter and Area

Consumer Math

p. 176-179

Perimeter is the distance around a figure or region. Notice the word rim in perimeter. Remember that perimeter is the measure of the rim of a figure.

Area is the number of squares of a given size that cover a surface. It is the surface included inside a perimeter. Notice that the last three letters in a square are in area.

The Key to Perimeter and Area

Rule: To find perimeter (P) of a rectangle, add the length (l) and width (w), then multiply by 2.

P = 2(l + w)

PERIMETER