This should be a nice and simple answer to your question.
The formula for working out the volume of a cuboid is
Volume=Length×Width×Height
This can be shortened to
V=l×w×h
Or
V=lwh
So, now you know the formula, on to the question
Work out the volume of a cuboid 6cm by 4cm by 2.5cm
Find the relevant information
6cm 4cm and 2.5cm
Write out the formula
V=l×w×h
Substitute in the values
V=6×4×2.5
Solve the equation
V=60
Volume is always a cubed number so remember to add the cubed sign next to your answer (³)
So your final answer will be
Volume=60³
I hope that this has helped you.