Răspuns:
a)[tex]64cm^{2}[/tex]
b)[tex]\frac{169}{16} cm^{2}[/tex]
c)[tex]4,2025cm^{2}[/tex]
d)[tex]\frac{121}{225}cm^{2}[/tex]
Explicație pas cu pas:
- Pasul 1 : Scriem formula ariei patratului:
[tex]A_{patrat} = l^{2}[/tex]
- Pasul 2 : Rezolvam subpunctele cu formula Ariei patratului
a) [tex]A_{patrat} = l^{2} = 8cm^{2} = 64cm^{2}[/tex]
b)[tex]A_{patrat} = l^{2} = (3\frac{1}{4}cm)^{2} = (\frac{13}{4}cm)^{2} = \frac{169}{16} cm^{2}[/tex]
c)[tex]A_{patrat} = l^{2}= (2,05cm)^{2} = 4,2025cm^{2}[/tex]
d)[tex]A_{patrat} = l^{2} = (7,(3)cm)^{2} = (\frac{73-7}{90}cm)^{2} = (\frac{66}{90}cm)^{2}=(\frac{22}{30} cm)^{2} = (\frac{11}{15} cm)^{2} = \frac{121}{225}cm^{2}[/tex]
