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7 Area and Perimeter
Area of Squares and Rectangles: LxW
Area of a Triangle: bh/2
Perimeter of Polygons: s+s+s+s
Circumference is the perimeter of a circle
Radius is the length from the end of the circle to the middle point.
Diameter is the length from one end of the circle to the other.
Circumference: 2 π r
Area of a circle: π r^2
For area, we always square it.
7 Area and Perimeter
Area of Squares and Rectangles: LxW
Area of a Triangle: bh/2
Perimeter of Polygons: s+s+s+s
Circumference is the perimeter of a circle
Radius is the length from the end of the circle to the middle point.
Diameter is the length from one end of the circle to the other.
Circumference: 2 π r
Area of a circle: π r^2
For area, we always square it.