twice the length of 5mm.
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0.01 metres = 10 millimetres
There are 10 mm in a cm, so 8 cm in equivalent to 80 mm. 80 mm / 2 mm = 40. Therefore, 8 cm is 40 times as long as 2 mm.
the answer is 9.1 because there are 10 mm in a centimeter
100 1 cm = 10 mm 10(1 cm) = 10(10 mm) 10cm = 100 mm
10 m = 10000 mm