Question

Va rog rezolvare completa​

Answer 1

Explicație pas cu pas:

A = l²; P = 4×l

$\frac{A_{1}}{A_{2}} = \frac{81}{121} = \frac{ {9}^{2} }{ {11}^{2} } \\ \implies l_{1} = 9 \: u.m. \: si \: l_{1} = 11 \: u.m.$

$\frac{l_{1}}{l_{2}} = \frac{9}{11}$

$\frac{P_{1}}{P_{2}} = \frac{4 \times l_{1}}{4 \times l_{2}} = \frac{l_{1}}{l_{2}} = \frac{9}{11}$