Răspuns:
[tex]\frac{P_1}{P_2} =\frac{52}{56}[/tex]
Explicație pas cu pas:
[tex]A_{patrat}=l^2[/tex]
[tex]\frac{A_1}{A_2} =\frac{169}{196}[/tex]
⇒[tex]\frac{A_1}{A_2} =\frac{l^2}{l^2} =\frac{169}{196}[/tex]
⇒[tex](\frac{l}{l})^2 =\frac{169}{196}[/tex]
⇒[tex]\frac{l}{l} =\sqrt{\frac{169}{196} } =\frac{13}{14}[/tex]
[tex]P_{patrat}=4l[/tex]
⇒[tex]\frac{P_1}{P_2} =\frac{4l}{4l} =\frac{4*13}{4*14} =\frac{52}{56}[/tex]
