P=6*8*1/2=24cm2
a)P=6*6*1/2=18cm2
b)P=16*16*1/2=148cm2
c)P=4*3*1/2=6cm2
d)P=12*12*1/2=72cm2
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P=6*8*1/2=24cm2
a)P=6*6*1/2=18cm2
b)P=16*16*1/2=148cm2
c)P=4*3*1/2=6cm2
d)P=12*12*1/2=72cm2