a mining company wishes to connet three points lying on the same elevation.places are referenced by a grid system where(a,b) is a point located a metres east and b metres north of a standard point.the three points are located at(110,250),(190,120),(230,270).they know that to minimize the construction cost of the tunnels they need to find a point lying in the interior of the triangle defined by the first three points.the point will be the junction of the three tinnels.they wish to know the location of this point, and the total diatance of the tunnels.
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