Perimeter of Semicircle Calculator

Perimeter of semicircle calculator calculates the perimeter of a semicircle by knowing its radius or diameter.

Semicircle Perimeter Calculator
Radius or     Diameter
Perimeter
semicicle Perimeter

Semi Circle Perimeter Formula


The Perimeter of a circle is

2πr

where


r = radius of a circle.
π ≈ 3.1415926.

Therefore, the semi circle perimeter formula is half of the circle plus the length of diameter(D) or 2 times of radius(r).

πr + 2r or

πr + D


How to Find the Perimeter of a Semicircle


To find the Perimeter of a semi circle, we need to know its radius or diameter,
the radius is half of the diameter.

For example, a semi circle with a diameter of 10,
that is also a radius of 5.

The perimeter calculation is:
3.1415926 x 5 + 10 ≈ 25.71.

Perimeter of Semi Circle
Radius Perimeter
1 5.14
2 10.28
3 15.42
4 20.57
5 25.71
6 30.85
7 35.99
8 41.13
9 46.27
10 51.42
11 56.56
12 61.7
13 66.84
14 71.98
15 77.12
16 82.27
17 87.41
18 92.55
19 97.69
20 102.83
21 107.97
22 113.12
23 118.26
24 123.4
25 128.54
26 133.68
27 138.82
28 143.96
29 149.11
30 154.25
31 159.39
32 164.53
33 169.67
34 174.81
35 179.96
36 185.1
37 190.24
38 195.38
39 200.52
40 205.66
41 210.81
42 215.95
43 221.09
44 226.23
45 231.37
46 236.51
47 241.65
48 246.8
49 251.94
50 257.08
51 262.22
52 267.36
53 272.5
54 277.65
55 282.79
56 287.93
57 293.07
58 298.21
59 303.35
60 308.5
61 313.64
62 318.78
63 323.92
64 329.06
65 334.2
66 339.35
67 344.49
68 349.63
69 354.77
70 359.91
71 365.05
72 370.19
73 375.34
74 380.48
75 385.62
76 390.76
77 395.9
78 401.04
79 406.19
80 411.33
81 416.47
82 421.61
83 426.75
84 431.89
85 437.04
86 442.18
87 447.32
88 452.46
89 457.6
90 462.74
91 467.88
92 473.03
93 478.17
94 483.31
95 488.45
96 493.59
97 498.73
98 503.88
99 509.02
100 514.16

Terms | Privacy | Disclaimer | Contact

©2025 bCalculator