1
a)
P=6a²
P=6*(7cm)²
P=294cm²
b)
P=6*(4,2m)²
P=105,84m²
2
a) 12*10cm=120cm
b) 12*2,4dm=28,8dm
3
P=ab
P=4,5m*3,2m
P=14,4m²
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1
a)
P=6a²
P=6*(7cm)²
P=294cm²
b)
P=6a²
P=6*(4,2m)²
P=105,84m²
2
a) 12*10cm=120cm
b) 12*2,4dm=28,8dm
3
P=ab
P=4,5m*3,2m
P=14,4m²