Question

Find the diagonal length of this figure

Answer 1

`5√(5) \:mm`

or

11.18 mm

Explanation:

length of diagonal

`=\sqrt{l^(2) +w^(2)+h^(2) } \\=\sqrt{8^(2) +6^(2)+5^(2) } \\=√(64 +36+25 ) \\=√(125 ) \\=5√(5) \: mm\\=11.18 mm`

Answer 2

the answer is,

11.18mm

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