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Please give me a full exlpanation.

 

Pat starts with two identical square pieces of paper. On the first one, she draws straight lines that divide the paper into a 3-by-3 grid of squares. The total length of the lines she draws is 18 cm

On the second piece of paper, Pat draws straight lines that divide the paper into a 6-by-6 grid of squares.

What is the total length of the lines that Pat draws on the second piece of paper?

 Jul 9, 2020
edited by Guest  Jul 9, 2020
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I actually need help with this problem too 

 Jul 10, 2020

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