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  • 1. Perimeter and Circumference!
    By : Kristine S
  • 2. Rectangle
    P=w+w+l+l
    P=2w+2l
    Example.
    P=10+10+20+20
    P=20+40
    P=60in
    W
    L
    L
    10in
    W
    20in
    20in
    10in
  • 3. Triangle
    P=a+b+c
    Example
    P=15+10+5
    P=30in
    A
    B
    C
    15in
    10in
    5in
  • 4. Square
    P=4s
    Example
    P=4*5
    P=20ft
    S
    S
    S
    S
    5ft
    5ft
    5ft
    5ft
  • 5. Circle
    C=∏d
    C= Circumference
    R=Radius
    D=Diameter
    ∏=3.14
    D
    R
  • 6. Example of Circle
    Example#1
    C=3.14*15cm
    C=47.1 cm
    Emaple#2
    C=3.14*20 cm
    C=62.8 cm
    15cm
    10cm
  • 7. Perimeter of a Hexagon, Pentagon, and Decagon
    P=6s
    P=10s
    P=5s
  • 8. Real Life Problems
    Cody is building a house. The length of the house is 10ft and the width of the house is 15ft.What is the Perimeter?
    15ft
    P=15+15+10+10
    P=30+20
    P=50ft
    10ft
    10ft
    15ft