shelbysky23 shelbysky23

12-06-2016
Mathematics

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find the area of an equilateral triangle with an apothem of 7

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12-06-2016

Hello,
Let's x the side of the triangle:
x²-x²/4=7²
==>3/4x²=49
==>x=14/√3

Area= 14/√3 * 7/2 =49√3 /3≈28,29016...

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