Respuesta :

Answer:

the answer is,

11.18mm

by pythagoras theorem, you'll get base diagonal as 10mm, therefore the diagonal*marked red is 11.18mm.

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Hrishii

Answer:

[tex]5\sqrt{5} \:mm[/tex]

or

11.18 mm

Step-by-step explanation:

length of diagonal

[tex]=\sqrt{l^{2} +w^{2}+h^{2} } \\=\sqrt{8^{2} +6^{2}+5^{2} } \\=\sqrt{64 +36+25 } \\=\sqrt{125 } \\=5\sqrt{5} \: mm\\=11.18 mm[/tex]