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  1. The maximum length of a pencil that can be kept in a rectangular box of dimensions 8cm × 6cm × 2cm is
    1. 2√13 cm
    2. 2√14 cm
    3. 2√26 cm
    4. 10√2 cm
Correct Option: C

Maximum length of the pencil = √8² + 6² + 2² = √64 + 36 + 4
= √104 = 2√26 cm


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