Which of the following is not equal to 46.3 meters?

A. 46,300 mm

B. 0.463 hm

C. 4630 cm

D. 0.00463 km

46.3

A. Meters need to be converted to millimetres

1 m = 1000 mm

46.3 m x 1000 mm/m = 46 300 mm

therefore this is correct

2. meters need to be converted to hectometer (hm)

100 m = 1 hm

46.3 m x 1/100 hm/m = 0.463 hm

this is correct

3. meters are converted to centimetres

1 m = 100 cm

46.3 m = 46.3 m x 100 cm/m = 4630 cm

This is correct

4. meters are converted to kilometers

1000 m = 1 km

46.3 m = 46.3 m x 1/1000 km/m = 0.0463 km

The option given is 0.00463 km, therefore this is the incorrect option