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Jamie B Maths Coursework - Hidden Faces Results: Number of cubes in a row Number of hidden faces 1 1 2 4 3 7 4 10 5 13 6 16 7 19 8 22 Rule: h=3n-2 Key: h=hidden faces, n=number of cubes Explanation of the rule: The way in which I worked out my rule was by looking at the number of hidden faces on the row of cubes. For each cube in the centre of the row, there are three faces seen and three faces hidden so that's why the first part of my rule was 3n. At the end of each row there are only 2 hidden faces so that's the reason you have to subtract -2 from the total number of hidden faces. Test and predict: Predict: Number of cubes=7 Using the rule, I predict that for 7 cubes there will be 19 hidden faces. 7x3=21-2=19 Test: I used 3-D cubes (7 cubes) and counted the hidden faces, which gave the same answer as my prediction, which proves that my rule is correct Predict: Number of cubes=8 Using...

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