Question

Can someone see if I am on the right track? Thank you!

Answer 1

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Answer 2

@LannyXX

Answer 3

So what I am thinking here is 8+1+1

Answer 4

actually no its 4+1+1

Answer 5

Ah I dont know lol

Answer 6

All I am given is 8 yellow cubes, and I am trying to figure out what to do.

Answer 7

why 8+1+1? hmm so 8 yellow cubes were glued together
then we COVER those with some greens, minimum number of green cubes, so that the yellows are not seen, then we do the same with red.

How do you figure out the minimum number of cubes to "cover" a glued cube of 8 cubes????

Answer 8

Do we cube the number 8?

Answer 9

Like, my guess is the best configuration to glue 8 yellow cubes is
[] []
[] []
looking at it from the front, then adding another four to the back if that makes sense.

Answer 10

Why do you think you should cube it?

Answer 11

because I have to add the greed and red cubes to cover?

Answer 12

alright, but how does cubing it help? I don't see the connection hmm

Answer 13

Idk I was thinking like 8^3 would give the amount there is?

Answer 14

except no that doesn't make sense now that i think of it

Answer 15

Like, we glued 8 cubes together, so the volume of this big cube is just the sum of the volume of 8.
Sorry, but it said that it's a big CUBE, so that means that
my configuration is the only one possible.
think about it, you have EIGHT cubes.
is there any other way of gluing them together than getting a 2 x 2 x 2 cube?
[] []
[] [] Length is two, Width is two, we have another 4 in the back SO depth is 2.

Answer 16

Now you need to think about, after you made this weird 2 x 2 x 2 huge yellow cube....... how many slots are available to "cover" ???? how many open slots? imagine it. A cube has 6 sides, how many "squares" or slots would there be on each side? ;)

Answer 17

so is there 22 green cubes?

Answer 18

I do understand there are 6 sides, but we will only use 3 sides

Answer 19

Isn't that right?

Answer 20

why only 3? We need to actually completely cover the big yellow cube right?

Answer 21

I know but then when you draw out a 2 by 2 cube, in order to cover each cube you only have to cover top side and side.

Answer 22

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Answer 23

Actually I came up with 24

Answer 24

hmmm. you might be right. but it said "UNTIL NO YELLOW CUBE CAN BE SEEN" so I assumed rotating can be possible since it was not stated otherwise.

Answer 25

I'd find the total number of little cubes at each level of coloured cube, then use subtraction to find how many of each colour

First cube is 2*2*2
Next one must be 4*4*4 (so that it completely encloses the inner cube, imagine it)
Next one must be 6*6*6 (again so it completely covers the inner)

Diagram might help to see why you need those sizes, if you can't picture it...