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math

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A builder needs to connect a partially built house to a temporary power supply. On the plan, the coordinates of the house are (50,114) and the power supply is at (147,82). what is the least amount of cable needed? why is it likely that the builder will use more cable than this?
pls help me.And explain how you did it.
thanks

  • math -

    if they are coordinates, can't you use the distance formula? the least amount would be:

    square root of ( (x2-x1)^2 + (y2-y1)^2 ) = 102.142

    he will probably need more cable because in real life there may possibly be obstacles preventing a straight line of cable

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