ex :2 va rog !!! urgenttt ♡♡
Multumesc!!! ♡♡♡:)

Răspuns:
a)
P=2AB+2BC
P=4BC+2BC
P=6BC
60= 6BC=》BC=10cm
AB=2×10=20cm
AB=CD=20cm
BC=AD=10cm
b)P=2AB+2AD
120=2AB+8AB
120=10AB =》AB=CD=12cm
AD=4×12
AD=BC=48cm