Question

calculati diagonala unui pătrat cu aria de 5 cm la a 2 a

Answer 1

A=l²=5
l=√5 cm
d²=l²+l²=2l²
d²=2x5=10
d=√10 cm

Answer 2

           [tex]A_4=l^2=\ \textgreater \ 5=l^2=\ \textgreater \ l= \sqrt{5} \\ Aplicam~Pitagora:DB^2=BC^2+CD^2\\ ~~~~~~~~~~~~~~~~~~~~~~~~~~~DB^2=5+5\\ ~~~~~~~~~~~~~~~~~~~~~~~~~~~DB^2=10\\ ~~~~~~~~~~~~~~~~~~~~~~~~~~~DB= \sqrt{10} [/tex]