the length of the longest rod which can be kept inside a rectangular box is 17 cm .if the inner length and the breadth of the box are 12 cm and 8 cm respectively , find it inner height

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Diagonal length of 2D rectangle = √64+144 = √208 Diaginal length of 3D box = √[(17*17)+208] = √289-208 =√81 = 9
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