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Decagon side = 20

Enter Decagon Info Below

The of a decagon is
  
The side of an decagon is 20
Calculate perimeter, area

Calculate Perimeter:

P = 10 x side
P = 10 x 20
P = 200

Calculate Area:

A = 5/2s2√5 + 2√5
A = 2.5(20)2(3.0776835371753)
A = 2.5(400)(3.0776835371753)
A = 3077.6835371753

Calculate Sum of the Interior Angles:

Interior Angle Sum = (sides - 2) x 180°
Interior Angle Sum = (10 - 2) x 180°
Interior Angle Sum = 8 x 180°
Interior Angle sum = 1440°

Calculate decagon diagonals

Diagonals  =  n(n - 3)
  2

Diagonals  =  10(10 - 3)
  2

Diagonals  =  10(7)
  2

Diagonals  =  70
  2

Diagonals = 35

Calculate diagonals from 1 vertex:

1 vertex Diagonals = n - 3
1 vertex Diagonals = 10 - 3
1 vertex Diagonals = 7

Calculate number of Δ from 1 vertex:

Triangles = N - 2
Triangles = 10 - 2
Triangles = 8

Other Properties:

Sides (Edges) = 10
Faces = 1
Vertices = 10






What is the Answer?

s = 20
P = 200
A = 3077.6835371753
Sides (Edges) = 10
Faces = 1
Vertices = 10

How does the Decagon Calculator work?

Free Decagon Calculator - Solves for the side, perimeter, and area of a decagon.
This calculator has 1 input.

What 1 formula is used for the Decagon Calculator?

P=10s

For more math formulas, check out our Formula Dossier

What 4 concepts are covered in the Decagon Calculator?

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

Example calculations for the Decagon Calculator

  1. Decagon side = 1
  2. Decagon area = 1
  3. Decagon perimeter = 1
  4. Decagon side = 2
  5. Decagon area = 2
  6. Decagon perimeter = 2
  7. Decagon side = 3
  8. Decagon area = 3
  9. Decagon perimeter = 3
  10. Decagon side = 4
  11. Decagon area = 4
  12. Decagon perimeter = 4
  13. Decagon side = 5
  14. Decagon area = 5
  15. Decagon perimeter = 5
  16. Decagon side = 6
  17. Decagon area = 6
  18. Decagon perimeter = 6
  19. Decagon side = 7
  20. Decagon area = 7
  21. Decagon perimeter = 7
  22. Decagon side = 8
  23. Decagon area = 8
  24. Decagon perimeter = 8
  25. Decagon side = 9
  26. Decagon area = 9
  27. Decagon perimeter = 9
  28. Decagon side = 10
  29. Decagon area = 10
  30. Decagon perimeter = 10
  31. Decagon side = 11
  32. Decagon area = 11
  33. Decagon perimeter = 11
  34. Decagon side = 12
  35. Decagon area = 12
  36. Decagon perimeter = 12
  37. Decagon side = 13
  38. Decagon area = 13
  39. Decagon perimeter = 13
  40. Decagon side = 14
  41. Decagon area = 14
  42. Decagon perimeter = 14
  43. Decagon side = 15
  44. Decagon area = 15
  45. Decagon perimeter = 15
  46. Decagon side = 16
  47. Decagon area = 16
  48. Decagon perimeter = 16
  49. Decagon side = 17
  50. Decagon area = 17
  51. Decagon perimeter = 17
  52. Decagon side = 18
  53. Decagon area = 18
  54. Decagon perimeter = 18
  55. Decagon side = 19
  56. Decagon area = 19
  57. Decagon perimeter = 19
  58. Decagon side = 20
  59. Decagon area = 20
  60. Decagon perimeter = 20

Decagon Calculator Video


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