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Sagot :

Bonjour,
a) 17 pouces*2,54cm = 43,18cm.
b) 5 pieds + 10 pouces = 5*12 pouces + 10 pouces = 60 + 10 pouces = 70 pouces.
70 pouces*2,54cm = 177,8cm = 1,77m.

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