Odpowiedzi

2010-03-08T17:46:51+01:00
V=πr²*h
650π=πr²*10 |/π
650=r²*10 |/10
r²=65
r=√65 cm
d=2r
d=√130cm
2010-03-08T17:46:57+01:00
H=10cm
V=650 Pi cm3

V=pi r2*H
650 pi= pi r2 *10 / :10 PI
65=r2
r=/65
sr=2r
sr=2/65
Odp. Srednica wynosi 2/65


2010-03-08T17:51:19+01:00
Dane:
h = 10cm
V = 650πcm³

Szukane
m =?

m - średnica.

V = πr²h
650π = 10πr²/π
650 = 10r²/10
65 = r²
r = √65

m = 2r
m = √130