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a)
P= 1/2 a *h
P= 1/2 3cm*2cm
P= 3cm2
b)
p=1/2 3cm*5cm
p= 7,5 cm2
2.
a)
p=1/2 6cm*2cm
p= 6cm2
b)
p=1/2 4cm * 3cm
p= 6cm2
3.
a)
p=1/2 3cm*4cm
p=6cm2
b)
p=1/2 4cm*1cm
p=2 cm2
Myslę ze pomogłam :P