Use Herons formula to find the area of an equilateral triangle whose side is p
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s=p+p+p/2=3p/2
area of an eqilateral triangle using heron's formula=√[s*(s-a)*(s-b)*(s-c)]=√[3p/2*(3p/2-p)*(3p/2-p)*(3p/2-p)]=√[3p/2*p/2*p/2*p/2]=(√3p^2)/4
area of an eqilateral triangle using heron's formula=√[s*(s-a)*(s-b)*(s-c)]=√[3p/2*(3p/2-p)*(3p/2-p)*(3p/2-p)]=√[3p/2*p/2*p/2*p/2]=(√3p^2)/4
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