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Divide the rectangle in the figure below into six parts. What's the area of a in the total area? What's the area of a in the sum of the areas of B. C? B. The sum of the areas of C is a fraction of the sum of the areas of d.e.f. (remark: there are 6 copies in total, and a.b.c.d.e.f takes one copy each
The area of a is one sixth of the total area;
The area of a is half of the sum of the areas of B. C;
B. The sum of areas C is two thirds of the sum of areas D, e and F
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