Odpowiedź:
a=7
b=7+3+3=13
h=3
P=(a+b)h/2
P=(13+7)3/2
P=60/2
P=30
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Odpowiedź:
a=7
b=7+3+3=13
h=3
P=(a+b)h/2
P=(13+7)3/2
P=60/2
P=30