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2 * 2 = 4 m2
a) trapez, więc:
(1/2) * (a+b) * h = (1/2) * (8+6) * 6 = 42 kwadraty
42*4= 168 m2
b)trójkąt:
(1/2) * a * h = (1/2) * 7 * 7 = 24,5 kwadraty
24,5 * 4 = 98 m2
c)trapez, więc:
(1/2) * (a+b) * h = (1/2) * (7+3) * 6 = 30 kwadratów
30 * 4= 120 m2