Answers

2015-08-30T21:00:19+05:30
Heron's formula states for a triangle with sides of lengths a,b,c
A =
where s = (a+b+c)/2
If you double the sides A1 =
= 4* = 4*A
The percentage increase in area is 4*A-A = 3*A so the answer is 300%
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