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Pat has two sheets of large, square stamps. One sheet consists of  9 stamps arranged in a 3-by-3 square. (That's 3 stamps by 3 stamps, not 3 inches by 3 inches.) The other sheet consists of 36 stamps arranged in a 6-by-6 square. The stamps on each sheet are separated by perforated creases. All the stamps on both sheets are the same shape and size.

 

The total length of the creases on the 3-by-3 sheet is  18 inches.

 

How many inches of creases does the 6-by-6 sheet have?

 May 22, 2018
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3 x 3 = 9 inches - length of perforated crease on 1 side

9 x 2 = 18 inches - length of 3 x 3 perforated creases

6 x 6 = 36 - Length of perforated crease on 1 side

35 x 2 = 72 inches - Length of perforated creases on 6 x 6 sheet.

 May 22, 2018

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