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| The rectangular tatami - floor mat - is a beautiful tesellation of the floor and at the same time a unit of area measurement. Most tatamis are 2x1 meters. What is the area shown in the picture? |
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| The rectangular tatami - floor mat - is a beautiful tesellation of the floor and at the same time a unit of area measurement. Most tatamis are 2x1 meters. What is the area shown in the picture? |