Réponses

2014-03-03T10:45:52+01:00
Ex2 
500g+2.5kg+1250g+200g+500g+(9x60)g=0.5kg+2.5kg+1.25kg+0.2kg+0.5kg0.54kg
=5.49kg

ex3
carre =4x3.5=14
rectangle=(2x8)+(2x7)=30
triangle=6.2x3=18.6
losange=4.2x4=16.8
cercle=3.14x10=31.4