a.105+105=210m (doua lungimi
300-210=90m (doua latimi)
90:2=45m (latimea)
proba: 105+105+45+45=300
b.
lungimea |_|+30
lungimea |_|+30
latimea |_|
latimea |_|
acolada dupa segmente si treci 300
300-(30x2)=300-60=240m (4 parti egale)
240:4=60m latimea
60+30=90m lungimea
90+90+60+60=180+120=300
c.
latimea |_|
latimea |_|
lungimea |_|_|_|_|
lungimea |_|_|_|_|
acolada dupa segmente si treci 300
300:10=30m latimea
30x4=120m lungimea
proba: 120+120+30+30=240+60=300