Magnitude of vector which comes on addition of two vectors, $6\hat i + 7\hat j$ and $3\hat i + 4\hat j$ is
Magnitude of vector which comes on addition of two vectors, $6\hat i + 7\hat j$ and $3\hat i + 4\hat j$ is
- A
$\sqrt {136} $
- B
$\sqrt {13.2} $
- C
$\sqrt {202} $
- D
$\sqrt {160} $
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