Fisa de lucru la care am nevoie de ajutor

a) A=c1×c2/2
3,2dm=32cm
0,2m=20cm
32×20/2=640/2=320
b) A=b×h/2
0,6dm=6cm
14×6/2=84/2=42cm
c) A=b×h
240mm=24cm
0,08m=800
24×800=19200
e) A=d1×d2/2
d1=8cm
d2=8×2=16
8×16/2=8×8=64cm