48dm is equal to 4m 80cm so 5m 8cm is the longest.
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48dm is equal to 4.8 metres or 480 centimetres.
5m, taking an online math test? Pathetic.
8cm is about 3 inches
It is sqrt(62 + 102 + 82) = sqrt(200) = 60.53 cm (approx).
128pi.