Kto pomoże z zadania z matematyki ?
13 zad tylko C) , D) , G) , H)
potrzebne wzory
Pk (pole kola)=πr²
pw (pole wycinka kola)= α/360 *Pk
Pz- pole zacieniowane
1.
Pw=1/4 *πr²
r=6
Pwd=9π --- duzy
Pw= 1/4πR²
R=4
Pwm=4π
Pz=Pwd-Pwm
Pz=5π
2.
Pwd=1/3 *πr²
Pwd=12π
Pwm=1/3 *πR²
Pwm=3π
Pz= 9π
3.
Pw=9π
Ptrojkata= 1/2 *6* 6
P tr= 18
Pz= 9(π-2)= 9π-18
4.
Pw= 1/2* πr²
r=8
Pw=32π
2Pk= 2*1/2* πR²
R=4 (bo 8/2)
2Pk=16π
Pz= 32π-16π= 16π
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potrzebne wzory
Pk (pole kola)=πr²
pw (pole wycinka kola)= α/360 *Pk
Pz- pole zacieniowane
1.
Pw=1/4 *πr²
r=6
Pwd=9π --- duzy
Pw= 1/4πR²
R=4
Pwm=4π
Pz=Pwd-Pwm
Pz=5π
2.
Pwd=1/3 *πr²
r=6
Pwd=12π
Pwm=1/3 *πR²
Pwm=3π
Pz= 9π
3.
Pw=1/4 *πr²
r=6
Pw=9π
Ptrojkata= 1/2 *6* 6
P tr= 18
Pz= 9(π-2)= 9π-18
4.
Pw= 1/2* πr²
r=8
Pw=32π
2Pk= 2*1/2* πR²
R=4 (bo 8/2)
2Pk=16π
Pz= 32π-16π= 16π