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2. = pi*2*15*60/360=5 pi
to l=1/6razy 144
l=24
Dane:
r=12cm
α=60°
Pkoła=π*r^2
Pkoła=π*12^2
Pkoła=144πcm^2
Pwycinka = α/360° * P
Pwycinka = 60/360° * 144πcm^2
Pwycinka= 24πcm^2
Zad. 2.
r=15cm
O=2π*r
O=2π* 15cm= 30πcm
α=60°
60/360 = 1/6
Dł. łuku = α/360 * O
Dł. łuku = 1/6 * 30πcm=5πcm