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Use Pythagoras' theorem to find the triangle's altitude or height:

122-62 = 108 and the square root of this is 10.39230485

1/2*base*height = area

1/2*6*10.39230485 = 31.17691455 square units

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14y ago
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Q: If one side of an equilateral triangle is 12Cm find the Area?
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