Question

how many millimeters does a kilometer have ​

Answer 1

Answer:1000000mm

Step-by-step explanation:

1 km = 1000m

1m =1000mm

1km = 1000×1000

1km = 1000000

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Answer 2

1 cm = 10 mm

1 m = 100 cm

1 km = 1000 m

1 km = 1000×100×10

= 1000000 mm