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# M06 Q9

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Joined: 05 May 2014
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Re: M06 Q9 [#permalink]

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21 May 2014, 04:07
Hi,

S = (a+b+c)/2 , where a,b,c are the length of the sides of a triangle,

length(a) = x
length(b) = y
length(c) = z

where x/y/z = distance between two points

So Area = = SQRT(S(S-a)*(S-b)*(S-c))

Ans is D

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Re: M06 Q9   [#permalink] 21 May 2014, 04:07

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# M06 Q9

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