1.09m等于多少mm 1.09m等于1090mm

1．1.09m等于（ 1090 ）mm

2．∵已知需求出1.09m等于多少mm

1米(m) = 1 × 1000 = 1000毫米(mm)

∴1.09m = 1.09 × 1000

= 1090mm

3．答：1.09m等于1090mm