Odpowiedzi

2009-11-08T17:32:43+01:00
Π * 6² - π * 4² = 36 π -16π = 20π =62.8
2009-11-08T17:32:49+01:00
D = 8m
Obw = πd = 3,14 * 8m = 25,12m
a = Obw = 25,12m
b = 2m
P = 25,12m * 2m = 50,24m²
Ścieżka ma powierzchnie 50,24m²
2009-11-08T17:32:46+01:00