find the hieght and hence the area of equilateral triangle with the 8.2
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Altitude / height of equilateral triangle = root 3/2 × side
Root3/2 × 8.2
Root 3 × 4.1
Height = 7.1 units (approx)
Area of equilateral triangle = root 3/4 × side²
Root 3/4 × (8.2)²
Root 3/4 × 67.24
Root 3 × 16. 81
Area = 29.11 square units(approx)
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