An open-topped box can be created by cutting congruent squares from each of the four corners of a piece of cardboard that has deminesions of 20cm by 30cm and folding up the sides. Determine the dimennsions of the squares that must be cut to create a box with a volume of 1008cm^3.
length=30-2x
width=20-2x
h=x
I don't get this because x and cm aren't interchangeable digits

Question

An open-topped box can be created by cutting congruent squares from each of the four corners of a piece of cardboard that has deminesions of 20cm by 30cm and folding up the sides. Determine the dimennsions of the squares that must be cut to create a box with a volume of 1008cm^3. 
length=30-2x 
width=20-2x 
h=x 
I don't get this because x and cm aren't interchangeable digits

cwrw238 · Answer

you are just assigning the  letter x to  the sides of the 4 squares  the answer will come out as c cms

cwrw238 · Answer

* as cms

cwrw238 · Answer

so you set up the equation

volume = height * length * width
 1080     =  x (30-2x)(20-2x)

and solve to find x