The side of an decagon is 9

Calculate perimeter, area

P = 10 x side

P = 10 x 9

P = **90**

A = 5/2s^{2}√5 + 2√5

A = 2.5(9)^{2}(3.0776835371753)

A = 2.5(81)(3.0776835371753)

A = **623.23091627799**

Interior Angle Sum = (sides - 2) x 180°

Interior Angle Sum = (10 - 2) x 180°

Interior Angle Sum = 8 x 180°

Interior Angle sum = 1440°

Diagonals = | n(n - 3) |

2 |

Diagonals = | 10(10 - 3) |

2 |

Diagonals = | 10(7) |

2 |

Diagonals = | 70 |

2 |

Diagonals = **35**

1 vertex Diagonals = n - 3

1 vertex Diagonals = 10 - 3

1 vertex Diagonals = **7**

Triangles = N - 2

Triangles = 10 - 2

Triangles = **8**

Sides (Edges) = **10**

Faces = **1**

Vertices = **10**

s = 9

P =**90**

A =**623.23091627799**

Sides (Edges) =**10**

Faces =**1**

Vertices =**10**

P =

A =

Sides (Edges) =

Faces =

Vertices =

s = 9

P =**90**

A =**623.23091627799**

Sides (Edges) =**10**

Faces =**1**

Vertices =**10**

P =

A =

Sides (Edges) =

Faces =

Vertices =

Free Decagon Calculator - Solves for the side, perimeter, and area of a decagon.

This calculator has 1 input.

This calculator has 1 input.

- area
- Number of square units covering the shape
- decagon
- 10 sided polygon or 10-gon
- perimeter
- The distance around a shape or object
- side
- line segment joining two vertices in a polygon also known as an edge

- Decagon side = 1
- Decagon area = 1
- Decagon perimeter = 1
- Decagon side = 2
- Decagon area = 2
- Decagon perimeter = 2
- Decagon side = 3
- Decagon area = 3
- Decagon perimeter = 3
- Decagon side = 4
- Decagon area = 4
- Decagon perimeter = 4
- Decagon side = 5
- Decagon area = 5
- Decagon perimeter = 5
- Decagon side = 6
- Decagon area = 6
- Decagon perimeter = 6
- Decagon side = 7
- Decagon area = 7
- Decagon perimeter = 7
- Decagon side = 8
- Decagon area = 8
- Decagon perimeter = 8
- Decagon side = 9
- Decagon area = 9
- Decagon perimeter = 9
- Decagon side = 10
- Decagon area = 10
- Decagon perimeter = 10
- Decagon side = 11
- Decagon area = 11
- Decagon perimeter = 11
- Decagon side = 12
- Decagon area = 12
- Decagon perimeter = 12
- Decagon side = 13
- Decagon area = 13
- Decagon perimeter = 13
- Decagon side = 14
- Decagon area = 14
- Decagon perimeter = 14
- Decagon side = 15
- Decagon area = 15
- Decagon perimeter = 15
- Decagon side = 16
- Decagon area = 16
- Decagon perimeter = 16
- Decagon side = 17
- Decagon area = 17
- Decagon perimeter = 17
- Decagon side = 18
- Decagon area = 18
- Decagon perimeter = 18
- Decagon side = 19
- Decagon area = 19
- Decagon perimeter = 19
- Decagon side = 20
- Decagon area = 20
- Decagon perimeter = 20

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