Question

Find the length of the longest pole that can be put in a room dimensions 10m by 10m by 5m

Answer 1

Length of the longest pole that can be put in a room = Length of the diagonal inside the room
Length of the diagonal $=\sqrt{(l^2+b^2+h^2)}$
$=\sqrt{({10}^2+{10}^2+5^2)}$
$=\sqrt{(100+100+25)}$
$=\sqrt{225}$
= 15