A square with perimeter 4 cm can be cut into two congruent right-angled triangles and two congruent trapezia as shown in the first diagram in such a way that the four pieces can be rearranged to form the rectangle shown in the second diagram.
What is the perimeter, in centimetres, of this rectangle?
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2\sqrt{5}
4\sqrt{2}
5
4\sqrt{3}
3\sqrt{7}
Select an option, then submit.
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