Question

calculati aria dreptunghiului cu laturile de ​

Answer 1

Răspuns:

Succes!

Explicație pas cu pas:

a)A=Lxl  A-aria  L-lungime   l-latime

  $(\sqrt{3} +3)*(\sqrt{27} +2)=(\sqrt{3}+3)*(3\sqrt{3}+2)=(9+2\sqrt{3}+9\sqrt{3}+6)\\=15+11\sqrt3 cm^{2}$

b)A=Lxl  A-aria   L-lungime  l-latime

  $(5\sqrt{5}+1)*(\sqrt{5}-1)=(25-5\sqrt{5}+\sqrt{5} -1)=24+4\sqrt{5}=4(6+\sqrt{5}) cm^{2}$

c)A=Lxl  A-aria    L-lungime l-latime

  $(6\sqrt{3}-3\sqrt{2})*(6\sqrt{3}+3\sqrt{3})=(108+54-18\sqrt{6}-9\sqrt{6})=162-27\sqrt{6}=27(6-\sqrt{6}) cm^{2}$

d)A=Lxl  A-aria   L-lungime l-latime

$(2\sqrt{2} -\sqrt{3})*(3\sqrt{2}-2\sqrt{3})=(12-6\sqrt{6}-3\sqrt{6}+6)=28-9\sqrt{6} cm^{2}$