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In equilateral triangle ABC with interior point D, if the perpendiculardistances from D to the sides of 4,5, and 6, respectively, are given, thenfind the area of ` A B Cdot` |
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Answer» Let the side equilateral triangleABC be a Area of triangle, `Delta = (a xx 4 + a xx 5 + a xx 6)/(2)` or `(a (4 + 5 + 6))/(2) = (sqrt3)/(4) a^(2)` or `(15)/(2) = (sqrt3a)/(4)` or `a = (30)/(sqrt3) = 10 sqrt3` or `Delta = (sqrt3)/(4) xx 100 xx 3` `= 75 sqrt3` |
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