It’s 3/2 you can look at the the point (0,1) and (2,4) you can use a method called rise over run you got up 3 over 2 units to get to the next point
The new size of cube's side is 6. V new cube = 6*6*6 = 216
A decimal is 3.5, or 2.4739464. a number and a little bit. basically not a whole number. :)
There is 1/2 2/4 3/6 4/8 5/10 6/12 7/14 8/16 9/18 10/20 and so on