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Perimeter Calculator
Calculate the perimeter of various shapes:
Rectangle: 2(length + width)
Square: 4 × side
Circle: 2πr (where r is radius)
Triangle: sum of all three sides
Regular Pentagon: 5 × side
Regular Hexagon: 6 × side
Select Shape:
Rectangle
Square
Circle
Triangle
Regular Pentagon
Regular Hexagon
Length:
Width:
Side Length:
Radius:
Side 1:
Side 2:
Side 3:
Side Length:
Side Length:
Calculate Perimeter
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