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Paljonko maapallon ympärysmitta kasvaa jos laitettaisiin sen ympärille 40000 km pitkä köysi ja se nostettaisiin kauttaaltaan 1 metrin korkeudelle maan pinnasta…
Ei. 6.28m on oikein.
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Ei. 6.28m on oikein.
Ei. 6.28m on oikein.
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Ei. 6.28m on oikein.