Calculate the length of the cuboid if its volume is 36 cu units.

The correct option is C 6 units
Volume of the cuboid
= length $\times$ breadth $\times$ height
= $l\times$ 2 $\times$ 3
= $6l$ cu units

But, volume = 36 cu units.

$\therefore 6l=36$
$⟹l=\frac{36}{6}=6$ units

Hence, the length of the cuboid is 6 units.