Hidden Faces of the Cube

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Hidden Faces of the Cube

Introduction: I am investigating the number of hidden faces for other

cuboids made from cubes. I will use visual representation to display

my results in the form of graphs. I will collect my results in a

table. I will start to collect my information in my table starting

with one cube and building them up into rows and different sized

cuboids. At the end of my investigation I hope to have a formula

worked out, and also I hope to be able to find the number of hidden

faces on a cuboids made up from 30 cubes.

Collecting Data: I have drawn a table to record my results. In the

first column I have the number of cubes and in the second I have the

number of hidden faces. In my table I have found the hidden faces for

every one cube put down there is one hidden face on the bottom. And if

a cube is put is put next to another there are always two hidden faces

between them.

Number Of Cubes

Number Of Hidden Faces

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1

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4

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7

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10

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13

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16

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19

What This Shows: My results show a pattern occurring. For every cube

that is added the number of hidden faces grows by three each time. I

my table the number of hidden faces are lade out in a sequence. This

will help me to find a formula so I can work out the number of hidden

faces without having to count them each time. To show how I know the

numbers are in sequence I will use my knowledge of methods of

difference.

1st 2nd 3rd 4th 5th 6th 7th

[IMAGE][IMAGE][IMAGE][IMAGE][IMAGE][IMAGE] 1 4 7 10 13 16 19

+3 +3 +3 +3 +3 +3

Number of hidden faces

[IMAGE]The Differences: In this sequence (using the number of hidden

faces from my table) the difference between them is +3.

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