Odpowiedzi

2010-01-18T15:55:26+01:00
R=8
kąt a=54
P=πr²*a/360
P=π*64*54/360
P=π*3456/360
P=9,6π
2010-01-18T18:03:49+01:00
R=8
Kąt a=54
Pwycinka = πr²* (a/360)
Pwycinka = π *([64*54]/360)
Pwycinka = π *(3456/360)
Pwycinka = 9,6π
3 3 3
2010-01-18T19:29:12+01:00
R=8cm
α=54°

Pw=α/360°•P
Pw=54°/360°•πr²
Pw=0,15•8²π
Pw=0,15•64π
Pw=9,6π(cm²)
2 3 2