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Easy

Question

A man goes 3 kms east from point A and takes right tum from point B to move 4 kms to point c. What is the minimum distance between paint A and point C

  1. 5 kms
  2. 8 kms
  3. 7.5 km
  4. 10 kms

The correct answer is: 5 kms



    Distance between A&C can be calculated by phytagoras theorem i.e
    (Hypotenuse)= (Perpendicutar)2+ (Base)2
    AC squared equals left parenthesis BC right parenthesis squared plus left parenthesis AB right parenthesis squared
    Ar squared equals left parenthesis 4 right parenthesis squared plus left parenthesis 3 right parenthesis squared
AC squared equals 16 plus 9
AC squared equals 25
AC equals plus-or-minus square root of 25
Ac equals plus-or-minus 5 km
    Since distance can never be negative
    ∴AC=5kms

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