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P=6a²
a) a=7cm
P=6*7²
P=294cm²
b) a=2,5dm
P=6*2,5²
P=37,5dm²
c) a=4,2m
P=6*4,2²
P=105,84m²
d) a=11,8cm
P=6*11,8²
P=835,44cm²
b)2,5*2,5*2,5=7,5
c)4,2*4,2*4,2=12,6
d)11,8*11,8*11,8=35,4
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