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Standard X
Mathematics
Mid Point
Question

A triangle has vertices A(1,-1) B(2,4) and C(6,0) The length of the median from A is
  1. 3
  2. 2√2
  3. 3√2
  4. 2√3

A
2√2
B
3
C
3√2
D
2√3
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Solution
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The correct option is B 3√2
Midpoint of BC = L = (4, 2)
∴AL=√(1−4)2+(−1−2)2=√9+9=√18=3√2

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