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?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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