Odpowiedzi

2010-02-18T15:31:57+01:00
V=Pp*h
r=14cm=1,4dm
h=40cm=4dm
Pp=πr^2
Pp=π1,4^2
Pp=1,96π
Pp=3,14*1,96
Pp=6,15dm^2
V=6,15*4
V=24,6dm^3
V=25dm^3
V=25l
Najlepsza Odpowiedź!
2010-02-18T15:34:53+01:00
D = 28cm r = 14cm H = 40cm
14 cm = 1,4 dm 40 cm = 4dm
V = πr² ∧ H = 1,4² π ∧ 4 = 1,96π ∧ 4 = 7,84 π = 7,84 ∧ 3,14 = 24,6176 dm³
24,6176 dm³ = 24,6176 l≈ 25 l