Odpowiedzi

2010-04-13T16:24:33+02:00
A)
v= 1/3 × πr² × H
r= 4
H= 8
v= 1/3 × π4² × 8
v=1/3 × 16π × 8
v= 128π / 3

b)
v= 1/3 × πr² × H
r = 5
l = 10
H = ?

Twierdzenie Pitagorasa.
H² + 5² = 10²
H² + 25 = 100
H² = 100 - 25
H² = 75 / √
H= √75
H= 5√3

v= 1/3 × πr² × H
v=1/3 × π5² × 5√3
v=125√3 / 3

c)
v= 1/3 × πr² × H

d = 10
r = 5
l = 10√2

Twierdzenie Pitagorasa.
H² + 5² =(10√)²
H² + 25 =200
H² = 200 - 25
H² = 175 / √
H = √175
H = 5√7

v= 1/3 × πr² × H
v=1/3 × π5²× 5√7
v=1/3 × 25π × 5√7
v=125√7 π/ 3