Question

Find the length of the longest pole that can placed in a room 12m long 8 m broad and 9 m high.

Answer 1

Length of the longest pole $=$ length of the diagonal of the room

$=\sqrt{{\left(12\right)}^2+{\left(8\right)}^2+{\left(9\right)}^2}$

$=\sqrt{289}$

$=17m$.