A square steel slab with an edge length of 20 cm is forged into a rectangular steel with a bottom area of 16 square cm. How long is the rectangular steel? We need to work out the formula

A square steel slab with an edge length of 20 cm is forged into a rectangular steel with a bottom area of 16 square cm. How long is the rectangular steel? We need to work out the formula

The shape of the slab changed, but the volume remained the same
The volume of the original billet is 20x20x20 = 8000 (cubic centimeter)
Cuboid steel length 8000 △ 16 = 500 (CM) using formula height = volume △ bottom area