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The height of an equilateral triangle is 6cm.Find its area |
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Answer» Altitude = Height = 6 cmLet length of side be \'a\'So , √3/2 a = 6So a = 12/√3So a = 4√3 cmThis \'a\' is the length of the sideNow, area = (√3/4) × a²So, Area = (√3/4) × (4√3)²So, Area = (√3/4) × (16×3)So, Area = ✓3 × 4 × 3So, Area = 12√3So, Area = 12×1.732So, Area = 20.784 cm²\xa0 1/2*base*height1/2*6*6=18 15.59 |
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