Placed pieces of the formula
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Users questions: A piece is a layer, two pieces from top to bottom put a layer 2, layer ..... Q: 1 When the layer is n, the layer corresponding to the number of pieces? 2 pieces of all layers and for the number?
Experts answer: pieces placed the formula: 1: A: The first number of layers should be: an = a1 + (n-1 ) D; d is the margin that is 1. Namely: 1 + (n-1) 1 = n (a) 2, A: number of all pieces should be: Sn = n (a1 + an) 2 (a)
Experts answer: pieces placed the formula: 1: A: The first number of layers should be: an = a1 + (n-1 ) D; d is the margin that is 1. Namely: 1 + (n-1) 1 = n (a) 2, A: number of all pieces should be: Sn = n (a1 + an) 2 (a)
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