By reducing the height of the cuboid by 4 decimetres, it becomes a cuboid and its surface area is reduced by 80 square metres. The cuboid was originally () cubic metres

By reducing the height of the cuboid by 4 decimetres, it becomes a cuboid and its surface area is reduced by 80 square metres. The cuboid was originally () cubic metres

Bottom side length a
4*4A=80
A =5
Box length =5+4=9
Volume =5*5*9=225 cm3

Bottom side length a
4*4A=80
A =5
Length of box =5+4=9
Volume =5*5*9=225 cm3

A cuboid, which increases in length by 5 cm, becomes a cuboid, and its surface area increases by 160 square centimeters.

Width and height of the original cuboid:160÷4÷5=8(cm),
The length of the original cuboid is:8-5=(cm),
3×8×8=192(Cubic centimeter),
Answer: The volume of the original cuboid is 192 cubic centimeters.
Therefore, the answer is:192.