Area and Perimeter

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Here is the link to the maths challenge we have been working on. Which rectangles have the same area and perimeter?

http://nrich.maths.org/6398&part=solution

What do we know already?

We know that 4 by 4 works.

That 3 by 6 works.

And!

2.5 x10, 2.25 x18, 2.125 x 34

What is the pattern and can we find any more?

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