What is the area of an equilateral triangle with an apothem of 6cm

asked Nov 3, 2016 13.7k views

3 votes

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4 votes

$A= (1)/(2) bh \\ b=6 \\ h=b*sin60 \\ A= (1)/(2) *6*6*sin60=18* ( √(3) )/(2) =9 √(3)$