Question

vă rog frumos ajutați-mă​

Answer 1

Răspuns:

$\frac{P_1}{P_2} =\frac{52}{56}$

Explicație pas cu pas:

$A_{patrat}=l^2$

$\frac{A_1}{A_2} =\frac{169}{196}$

⇒$\frac{A_1}{A_2} =\frac{l^2}{l^2} =\frac{169}{196}$

⇒$(\frac{l}{l})^2 =\frac{169}{196}$

⇒$\frac{l}{l} =\sqrt{\frac{169}{196} } =\frac{13}{14}$

$P_{patrat}=4l$

⇒$\frac{P_1}{P_2} =\frac{4l}{4l} =\frac{4*13}{4*14} =\frac{52}{56}$