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Height of an equilateral triangle = √3/2 x side = √3/2 x 20 = 10√3 ≈ 17.32
20. There are 3 sides to any triangle. For an equilateral triangle all 3 sides are the same length. Therefore for this triangle we can say that, where x equals the length of a side: 3x = 60 x = 60/3 x = 20
An Equilateral Triangle has 3 equal sides so 3 X 8.5m = 25.5m
The formula to calculate the area of a triangle is (base/2) x height... therefore the are of the triangle in this case is 18 square inches
0.5 x base length x vertical height