Geometry Perimeter And Area 1

Geometry: Perimeter and Area ,[object Object],[object Object],[object Object],[object Object]

Width ,[object Object],[object Object]

Length ,[object Object],[object Object]

Perimeter ,[object Object],[object Object],2 in 3 in

Perimeter ,[object Object],[object Object],2 in 3 in P= 2 + 3 + 2 + 3 = 10 in You can find the perimeter of a rectangle by adding all of the sides together.

Find the Perimeter Using a Formula

PERIMETER OF A RECTANGLE P=2l+2w

2 in. 3 in. Perimeter of a Rectangle P=2l+2w P=2(3 in.) + 2 (2in.) P=6 in. + 4 in. P=10 in.

PERIMETER OF A TRIANGLE P=s +s +s 1 2 3

Perimeter of a Triangle P=s + s + s ,[object Object],P=8cm+10cm+6cm P= 24 cm 8cm 6cm 10cm

Remember ,[object Object],[object Object],[object Object]

Finding area of an irregular figure ,[object Object],[object Object],[object Object],[object Object]

Find The Perimeter What is the perimeter of this figure?

Area Area is the amount of surface space that a flat object has. Area is reported in the amount of square units.

AREA ,[object Object],1 2 units (ft, in, m) 2 3 4

Count the number of blue squares to determine the area of that surface. The area is equal to 9 squares.

Area = 15 square feet What is the area of this surface if each square is equal to one foot? Count the number of squares. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Two neighbors build swimming pools. This is what the pools look like. Which family has the pool with the bigger swimming area?

The area of Family A’s pool is 8 square units. The area of Family B’s pool is 7 square units. Therefore, Family A has the pool with the bigger swimming area.

Area of Squares/Rectangles ,[object Object],2 Length(2) x Width(2) = 4 square units

Parallelogram Area ,[object Object],[object Object],BASE (length) Height (width) 8 5 Base 8 x Height 5 = Area 40 The diagonal line is NOT the height!!!

Geometry Perimeter And Area 1

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Geometry Perimeter And Area 1