Online Calculators > Math Calculators > Area of Semicircle Calculator

Area of Semicircle Calculator

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

 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

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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