Mathematics, 22.05.2020 02:03, blesskids600

Pierre cut the length of an 8 cm wide plank into nine pieces and arranged them as shown in the picture. The centrepiece is a square. How long was the original plank?

Pierre cut the length of an 8 cm wide plank into nine pieces and arranged them as shown in the pictu

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Pierre cut the length of an 8 cm wide plank into nine pieces and arranged them as shown in the pictu...