Question

Aflati aria patratului cu latura de
A)(√5-2)cm
B)(2√3+1)cm

Answer 1

[tex]l_{\square}= \sqrt{5}-2~cm \\ A_{\square}=l^2=( \sqrt{5}-2 )^2=5+4-4 \sqrt{5}=\boxed{9-4 \sqrt{5}~cm^2} \\ \\ l_{\square}=2 \sqrt{3}+1~cm \\ A_{\square}=l^2=(2 \sqrt{3}+1)^2=12+1+4 \sqrt{3}=\boxed{13+4 \sqrt{3}~cm^2} [/tex]