Odpowiedź:
a.
P=a•b=8•3,5=28cm2
b.
P=1/2•a•h=1/2•7•5=35/2=17,5cm2
c.
P=(a+b)•h/2=(5,5+4,5)•7/2=10•7/2=35dm2
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Odpowiedź:
a.
P=a•b=8•3,5=28cm2
b.
P=1/2•a•h=1/2•7•5=35/2=17,5cm2
c.
P=(a+b)•h/2=(5,5+4,5)•7/2=10•7/2=35dm2