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      Question

      A cuboid has dimensions of 15 cm in length, 12 cm in

      breadth, and 9 cm in height. What is the length of its body diagonal?
      A 15√2 cm Correct Answer Incorrect Answer
      B 12√2 cm Correct Answer Incorrect Answer
      C 5√12 cm Correct Answer Incorrect Answer
      D 8√12 cm Correct Answer Incorrect Answer

      Solution

      We know that length of body diagonal of cuboid = √(length 2  + breadth 2  + height 2 )

      So, length of the body diagonal = √(15 2  + 12 2  + 9 2 ) = √450 = 15√2 cm

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