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Sagot :

GABINVERDIER

Bonjour,

A) 0.000 000 001 m

= 0.000 000 000 010 cm

= 10^-11 cm

B) 81 444 000

= 8.144 4 x 10^7

C) 20 732 000

= 2.073 2 x 10^7

D) 81 444 000 <—> 100%

20 732 000 <—> ?

Donc ?= (20 732 000 x 100) / 81 444 000 = 25.5%

Or 25.5% = 2.55 x 10 %

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