• Perimetrul și aria
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  • Află semiperimetrul:
    P= 2 x (l+L)= 2 x 28=56 / Sp=56:2=28
  • Care este aria figurii date?
    A= lxl / A= 6 x 6 = 36
  • Află suma perimetrelor figurilor date:
    Pp=4x3= 12 / Pd= 2 x (3+5)= 2x8=16/ S= 12+16= 28
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