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2014-04-16T20:42:44+03:00
A=Lxl
a)A=6x10=60cm²
b)A=8.5x2.4=20.4cm²
c)Se simplifica 12 cu 6=> 25x2=50 cm²
2 5 2
2014-04-16T20:43:39+03:00
A dreptunghi =  L x l
a) A = L x l = 10 x 6 = 60 cm 2 (cm patrati)
b) A = L x l = 8,5 x 2,4 = 20,4 cm 2
c) A = L x l = 4 1/6 x 12 = 25/6 x 12 = 50 cm 2
2 5 2