They are alike because one kilometer is one thousand times more than one meter like one thousand is one thousand times more than one one. 1 kilometer= 1,000 x 1 meter 1 thousand=1,000 x 1 one 1 Liter= 1,000 x 1 milliliter 1 ten thousand=1,000x 1 ten 1 Kilogram=1,000 x 1 gram 1 hundred thousand=1,000 x 1 hundred They are different because metric units are for measurement/volume/mass and place value units are for counting/numbers.
So in this case we just want to find the cubic root of this. Cubic roots: 1: 1 2: 8 3: 27 4: 64 5: 125 6: 216 7: 343 8: 512 9: 729 So each side of the rectangular prism is 9 feet long.
