Odpowiedzi

2010-01-05T15:57:05+01:00
V=Pp*h
V=πr²*h

2r=6dm
r=3dm
h=12dm

V=3,14*9*12= 339,12 dm³
1dm³= 1l

zatem 339 litrów
2010-01-05T15:59:12+01:00
R=60:2=30 cm = 3 dm
Pp=πr²
Pp=3²π
Pp=9π
π≈3,14
9*3,14=28,26 dm²

H=1,2 m = 12 dm

V=Pp*H
V=28,26*12
V=339,12 dm³ ≈ 340 l