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Pt=1/2×h×(a+b)
Pt=1/2×400×(250+450)
Pt=140000m²
1ha=10 000m²
140000m²=14ha
14×4,5t=63t
Rolnik z całej działki zbierze 63 tony pszenicy.
P = ½ * (250 + 450) * 400
P = ½ * 700 * 400
P = 350 * 400
P = 140000
140000m² : 10000m² = 14ha
14ha * 4,5 tony = 63 ton
Odp. Zabrano 63 ton pszenicy