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what is the perimeter of the 6 by 6cm square joined to an 8 by 8cm square

perimeter is when you add the outer lines together. So draw a diagram of the two squares as one, and take out the line in the middle I believe?

6 cm on three sides of the small square. Then 8 on three sides of the big one. And the short side, you do 8-6=2. So add together 6+6+6+8+8+8+2

It makes a difference where the two squares are joined. At the corner? end to end?

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