Four.
Integers ending in 0 are ambiguous because there is no way of establishing whether the number is accurate to the last digit (zero) or has been rounded to the nearest ten.
12 square mtrs
convert square mtrs to lineal mtrs
1.778 mtrs.
100.838 mtrs
2.3 mtrs
800cm = 8 mtrs
74.10 cents
4.65 mtrs
You can't convert that.
430 cm = 4.3 mtrs
360 inches = 9.144 metres
6 metres = 0.006 kilometres.