Yes.
Squares are multiplication of one kind of unit two times as when meter is multiplied by a meter then it will become meter square, when kilogram is multiplied by another kilogram quantity then the unit will become Kg square Now to change one square unit to another there are some metric rules
520 caue x4 500 is 100 and take away 20 and 4x100=520
Kilogram per cubic meter is the one that doesn't belong. Square meter is meter^2 and cubic meter is meter^3 but kilogram per cubic meter is a density
You do not. A cubic metre is a measure of volume in 3-dimensional space, whereas a square metre is a measure of area in 2-dimensional space. The two measure different things and, according to the basic rules of dimensional analysis, conversion from one to the other is not valid.