A cubic unit is a volume eg. m³ A square unit is an area eg. m²
An inch is a measure of distance or length. A square inch is a measurement of area. A cubic inch is a measure of volumen.
a cubic inch is like a dice, 1 inch on height, width, and length, a square inch is like a piece of paper that is 1 inch long and 1 inch wide
A square is a two dimensional figure with equal sides that you can draw on a piece of paper. A cubic square is a three dimensional object with equal sides. Kids play with letter and number wooden blocks that have numbers and/or alphabets on each face. That's a cubic square. A pair of dice that you use in board games like chutes and ladders, monopoly etc., each dice is an example of a cubic square.
The difference between 9 cubic feet and 1.2 cubic feet is 7.8 cubic feet. This means that 9 cubic feet is 7.8 cubic feet more than 1.2 cubic feet.
centimeter - unit of lengthsquare centimeter - unit of areacubic centimeter - unit of volume - equal to milliliter
You can't convert between square and cubic units.
Nothing
16 cubic feet is three cubic feet larger than 13 cubic feet.
Square centimeters is a measure of surface area. Cubic centimeters are a measure of volume. A cube that's 20 cm on an edge would have 6 surfaces, each 400 square cm in size, giving a total surface of 2400 square centimeters - slightly less than 1/4 of a square meter. That same cube would have a volume of 8,000 cubic centimeters (which would be 8 liters.)
A centimeter is a unit of length, a cubic centimeter is a unit of volume.
A linear unit is used to measure length or distance whereas a cubic unit is used to measure volumes. A cubic unit may defined as a cubic measure (eg a litre) or it could be composed of three linear units (eg cubic centimetre), or a square unit and a linear one (acre-foot). This last combination is rare in the SI system because the linear units are more easily linked to square and cubic units.