Area of Semicircle Calculator

Area of semicircle calculator calculates the area of a semicircle by knowing its radius or diameter.

Semicircle Area Calculator
Radius or     Diameter
Area
semicicle area

Semi Circle Area Formula


The area of a circle is

πr2

where


r = radius of a circle.
π≈3.1415926.

Therefore, the semi circle area formula is half of the circle.

πr2/2


How to Find the Area of a Semicircle


To find the area 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 12,
that is also a radius of 6.

The area calculation is:
3.1415 x 62/2 ≈56.55

Area of Semi Circle
Radius Area
1 1.57
2 6.28
3 14.14
4 25.13
5 39.27
6 56.55
7 76.97
8 100.53
9 127.23
10 157.08
11 190.07
12 226.19
13 265.46
14 307.88
15 353.43
16 402.12
17 453.96
18 508.94
19 567.06
20 628.32
21 692.72
22 760.27
23 830.95
24 904.78
25 981.75
26 1061.86
27 1145.11
28 1231.5
29 1321.04
30 1413.72
31 1509.54
32 1608.5
33 1710.6
34 1815.84
35 1924.23
36 2035.75
37 2150.42
38 2268.23
39 2389.18
40 2513.27
41 2640.51
42 2770.88
43 2904.4
44 3041.06
45 3180.86
46 3323.8
47 3469.89
48 3619.11
49 3771.48
50 3926.99
51 4085.64
52 4247.43
53 4412.37
54 4580.44
55 4751.66
56 4926.02
57 5103.52
58 5284.16
59 5467.94
60 5654.87
61 5844.93
62 6038.14
63 6234.49
64 6433.98
65 6636.61
66 6842.39
67 7051.3
68 7263.36
69 7478.56
70 7696.9
71 7918.38
72 8143.01
73 8370.77
74 8601.68
75 8835.73
76 9072.92
77 9313.25
78 9556.72
79 9803.34
80 10053.1
81 10305.99
82 10562.03
83 10821.22
84 11083.54
85 11349
86 11617.61
87 11889.36
88 12164.25
89 12442.28
90 12723.45
91 13007.76
92 13295.22
93 13585.82
94 13879.56
95 14176.44
96 14476.46
97 14779.62
98 15085.93
99 15395.37
100 15707.96

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