Question

if your room has equal length, breadth and height of 315 cm, then find the longest pole that can be placed in your room​

Answer 1

Answer:

In the above figure, BH is the diagonal of a cuboid.

A cuboid having length = l, breadth = b, height = h then the formula of the diagonal of a cuboid is:

l2+b2+h2−−−−−−−−−√

And the dimensions of a room are given as 10m×10m×5m where l = 10m, b = 10m and c = 5m then substituting the values of l, b and h in the above expression we get,

(10)2+(10)2+(5)2−−−−−−−−−−−−−−−−√=100+100+25−−−−−−−−−−−−√=225−−−√=15