MATEMATYKA RATUNKU DAM NAJ!

[latex]18cm^{2}: (frac{2}{3} )^{2}=18cm^{2}: frac{4}{9}=18cm^{2}* frac{9}{4}= frac{81}{2}cm^{2}=40,5cm^{2} [/latex]

k=2:3      2 P1=18 cm                  2 18/P=(2/3) 18 18:P=4/9 4P=162/:4                2 P=40,5cm