Răspuns:
Explicație pas cu pas: LUNGIMEA=28x2=46cm
latimea=7x2=14 cm
Perimetru= 46+=14=60cm
L=12x2=24cm
l=5x2=10cm a).
P= 24+10=34cm
L=27x2=54cm
l=3x2=6cm b).
P=54+6=60cm
L=54x2=108cm
l=2x2=4cm c).
P=108+4=112CM
L=18X2=36CM
l=1x2=2cm d).
P=36+2=38cm
l=