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medians of triangle ABC intersect at G. if ar(triangle ABC) = 27 CM^2, then ar(triangle BGC) =?

  • maths -

    Area of triangle = bh/2

    Medians meet at one third from the base, so h'=h/3. Therefore triangles with the vertex at G is one third the area of the whole triangle, or 27/3=9 cm².

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