Odpowiedzi

2009-05-01T18:54:47+02:00
X - pierwotny bok działki

10 ha = 100000 m²

x * x + 100000 = (x+100) * (x+100)
x² + 100000 = x² + 200x + 10000
100000 - 10000 = 200x
90000 = 200x
x = 450
x² = 202500 [m²] = 20,25 ha