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If the side of an equilateral triangle is 8 cm, then the area of the triangle (correct to two decimals places). |
27.17 cm2 27.27 cm2 27.71 cm2 27.72 cm2 |
27.71 cm2 |
We know that, Area of a equilateral triangle = \(\frac{\sqrt {3}}{4}\) × (side)2 Side = 8cm Area of a equilateral triangle = \(\frac{\sqrt {3}}{4}\) × (8)2 = \(\frac{\sqrt {3}}{4}\) × 64 = 27.71 cm2 |
