Question

calculeaza ungime laturii unui patrat cu perimetrul de 1360 m , apoi afla aria acestuia

Answer 1

$P=4l$
$4l=1360m$
$l=340m$
$Aria _{patratului} =lxl=340x340=115600m ^{2}$

Answer 2

$P=1360~m \\ 4 \cdot l=1360 \\ l=1360:4 \\ l=340~m \\ A=l^2=340^2=115600~m^2$