Equilateral Triangle

(the database of solved problems)

All the problems and solutions shown below were generated using the Equilateral Triangle Calculator.

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ID	Problem	Count
1	Find the side $ a $ of an equilateral triangle if altitude $h = 15\, \text{cm}$.	1284
2	Find the side $ a $ of an equilateral triangle if side $a = 12\, \text{m}$.	1093
3	Find the side $ a $ of an equilateral triangle if ???.	341
4	Find the side $ a $ of an equilateral triangle if altitude $h = 15$.	184
5	Find the side $ a $ of an equilateral triangle if side $a = 5\, \text{mm}$.	175
6	Find the area $ A $ of an equilateral triangle if side $a = 12$.	169
7	Find the side $ a $ of an equilateral triangle if incircle radius $r = 17\, \text{cm}$.	150
8	Find the side $ a $ of an equilateral triangle if perimeter $P = 60\, \text{cm}$.	126
9	Find the side $ a $ of an equilateral triangle if side $a = 8\, \text{mm}$.	122
10	Find the side $ a $ of an equilateral triangle if side $a = 10\, \text{cm}$.	116
11	Find the side $ a $ of an equilateral triangle if circumcircle radius $R = 5\, \text{cm}$.	109
12	Find the side $ a $ of an equilateral triangle if side $a = 10\, \text{cm}$.	105
13	Find the side $ a $ of an equilateral triangle if side $a = 2\, \text{mm}$, altitude $h = 2\, \text{cm}$, perimeter $P = 2\, \text{cm}$, area $A = 2\, \text{cm}$, circumcircle radius $R = 2\, \text{cm}$ and incircle radius $r = 2\, \text{cm}$.	102
14	Find the side $ a $ of an equilateral triangle if altitude $h = 26\, \text{cm}$.	97
15	Find the side $ a $ of an equilateral triangle if incircle radius $r = 8\, \text{cm}$.	97
16	Find the side $ a $ of an equilateral triangle if circumcircle radius $R = 8\, \text{cm}$.	90
17	Find the side $ a $ of an equilateral triangle if side $a = 2\, \text{mm}$.	86
18	Find the side $ a $ of an equilateral triangle if altitude $h = 6\, \text{cm}$ and perimeter $P = 6\, \text{cm}$.	84
19	Find the side $ a $ of an equilateral triangle if side $a = 15\, \text{cm}$.	82
20	Find the side $ a $ of an equilateral triangle if side $a = 6\, \text{m}$.	79
21	Find the side $ a $ of an equilateral triangle if incircle radius $r = 10\, \text{cm}$.	78
22	Find the side $ a $ of an equilateral triangle if incircle radius $r = 4\, \text{cm}$.	75
23	Find the side $ a $ of an equilateral triangle if side $a = 5\, \text{km}$.	74
24	Find the side $ a $ of an equilateral triangle if circumcircle radius $R = 14\, \text{cm}$.	67
25	Find the side $ a $ of an equilateral triangle if incircle radius $r = 4\, \text{cm}$.	64
26	Find the side $ a $ of an equilateral triangle if altitude $h = 36\, \text{cm}$.	57
27	Find the side $ a $ of an equilateral triangle if side $a = 6\, \text{cm}$.	57
28	Find the area $ A $ of an equilateral triangle if side $a = 8\, \text{ft}$.	54
29	Find the side $ a $ of an equilateral triangle if side $a = 30\, \text{m}$.	53
30	Find the side $ a $ of an equilateral triangle if ???.	46
31	Find the side $ a $ of an equilateral triangle if area $A = 2.5\, \text{cm}$.	45
32	Find the side $ a $ of an equilateral triangle if circumcircle radius $R = 7\, \text{cm}$.	45
33	Find the side $ a $ of an equilateral triangle if side $a = 5$.	37
34	Find the area $ A $ of an equilateral triangle if incircle radius $r = 8$.	34
35	Find the side $ a $ of an equilateral triangle if altitude $h = 9\, \text{cm}$.	34
36	Find the side $ a $ of an equilateral triangle if circumcircle radius $R = 9\, \text{cm}$.	34
37	Find the side $ a $ of an equilateral triangle if side $a = 4$.	32
38	Find the area $ A $ of an equilateral triangle if incircle radius $r = 17$.	30
39	Find the side $ a $ of an equilateral triangle if side $a = 10$.	29
40	Find the altitude $ h $ of an equilateral triangle if side $a = 6$.	29
41	Find the side $ a $ of an equilateral triangle if perimeter $P = 18\, \text{cm}$.	28
42	Find the side $ a $ of an equilateral triangle if side $a = 8$.	28
43	Find the side $ a $ of an equilateral triangle if perimeter $P = 60\, \text{cm}$.	28
44	Find the side $ a $ of an equilateral triangle if altitude $h = 61\, \text{cm}$.	27
45	Find the side $ a $ of an equilateral triangle if side $a = 3\, \text{mm}$.	27
46	Find the side $ a $ of an equilateral triangle if side $a = 30\, \text{mm}$.	26
47	Find the side $ a $ of an equilateral triangle if circumcircle radius $R = 12\, \text{cm}$.	26
48	Find the side $ a $ of an equilateral triangle if side $a = 2$.	26
49	Find the side $ a $ of an equilateral triangle if incircle radius $r = 9\, \text{cm}$.	24
50	Find the side $ a $ of an equilateral triangle if side $a = 4\, \text{mm}$.	23