Odpowiedzi

2009-12-14T21:25:51+01:00
P = 5dm2 = 500cm2 bo 1dm2 = 100cm2
a = 10cm
h = ?
p = 1/2 a*h
500cm2 = 1/2 10cm*h
500cm2 = 5cm*h
h = 500cm2 /5cm
h = 100cm
2 5 2