Question

Express 45 mm in cm , m , and km using decimal

Answer 1

45mm,
a) In cm = 4.5 cm
b) In m = 0.045 m
c) In km = 0.000045 km.

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Answer 2

45 mm is equivalent to 4.5 cm, 0.045 m, 0. 000045 Km.

To find:

The expression for the 45 mm in cm, m, km.

Solution:

We know that,

I centimeter is equal to 10 millimeter.

$1mm = \frac{1}{10} cm$

1 meter is equal to 1000 millimeter.

$1 mm = \frac{1}{1000}  m$

1 kilometer is equal to 1000000 millimeter.

$1mm = \frac{1}{1000000} km$

Hence,

45 mm =$\frac{45}{10} cm$ = 4.5 cm

45 mm =$\frac{45}{1000} m$ = 0.045 m

45 mm =$\frac{45}{1000000} km$ = 0.000045 km