Question

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

Answer 1

The length of the longest pole can be calculated by calculating the value of the diagonal of a room which is considered to be in the shape of a cuboid. Hence,
The Diagonal of the cuboid $=\sqrt{l^2+b^2+h^2}=\sqrt{{12}^2+8^2+9^2}=\sqrt{289}=17m.$