If the length of a cuboid is 20 m, breadth is 5 m and height is 4 m, then find the length of diagonal of the cuboid.
Answer & explanation
Correct answer: option 2
We know that,
Diagonal of cuboid = \(\sqrt {l^2 + b^2 + h^2}\)
Length = 20 m
Breadth = 5 m
Height = 4 m
Diagonal of cuboid = \(\sqrt {20^2 + 5^2 + 4^2}\) = \(\sqrt {441}\) = 21 m