Question

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

Answer 1

Answer.

Given length l = 12 m

breadth b = 9 m and height h = 8 m

Longest rod that can be placed in a room is nothing but its diagonal.

Length of diagonal of a cuboid = √(l2 + b2 + h2)

Length of longest rod = √(122 + 92 + 82) m

= √(144 + 81 + 64) m

= √289 m

= 17 m

Thus the length of the longest rod is 17 m

Please mark as brainlist answer !,!!!!!

Please mark as brainlist answer !!!!!!,,,

Answer 2

It will be equal to the diagonal of room

√l^2+b^2+h^2
√144+81+64 m
17 m