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Question

The centroid of a triangle is given as C(a,3b) having vertices A(-a,2b), B(-2a,4b) and C(x,y).the values of x and y are

A
6a and 6b
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B
3a and 3b
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C
3a and 6b
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D
6a and 3b
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Solution

The correct option is D 6a and 3b
Given that,
Point A (-a,2b), B(-2a,4b)
Centroid C(a,3b)
Centroid =((x1+x2+x3)3+(y1+y2+y3)3)(a,3b) =((a2a+x)3,(2b+4b+y3))(a,3b) = ((3a+x3),(6b+y3))Equating corresponding Co ordinates,a=3a+x36a=xb=6b+y33b=yHence Option A is the correct answer

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