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Lime

An airplane at T(80,20) needs to fly to both U(20,60) and V(110,85). What is the shortest possible distance for the trip?

  • one year ago
  • one year ago

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  1. mathmate
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    Compare the distances T-U-V and T-V-U and take the shorter of the two.

    • one year ago
  2. Lime
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    \[\sqrt((20 - 60)^2 + (80 - 20)^2)\] \[\sqrt((-40)^2 + 60^2)\] \[\sqrt(1600 + 3600)\] \[\sqrt(5200)\]

    • one year ago
  3. Lime
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    And then \[\sqrt((20 - 85)^2 + (80 - 110)^2)\]?

    • one year ago
  4. mathmate
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    Since the route T-U-V and T-V-U both use U-V, we know they are equal. So just compare which of T-U or T-V is shorter. one of them is sqrt(5200), and the other is sqrt(5125), so make your choice.

    • one year ago
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