38 000 km =
m 6.5 m =
mm 4.3 ms =
s 0.02 km=
cm

The length shows the distance between two points (symbol, L)

length measuring devices include a ruler, micrometer

The SI unit for length is m

The conversion of several units is:

1 km = 10³ m = 10⁵ cm

1 m = 10³ mm

38000 km = 3.8 x 10⁴ km = 3.8 x 10⁷ m

6.5 m = 6.5 x 10³ mm

4.3 ms = 4.3 x 10⁻³ s

0.02 km = 2 x 10⁻² x 10⁵ cm = 2 x 10³ cm

a patient chooses to not take a beneficial medical treatment.

explanation:

a:

by the combination of an unlimited number of elements