Answers

2015-06-22T23:45:31+05:30
According to HERO`S LAW , area of triangle is 
√[s(s-a)(s-b)(s-c)]
where , s =  semiperimeter
           a,b,c = length of the edges
so the area becomes
√(3x × x × x × x)
= √3 x² cm²
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