a) oblicz promien kola o obwodzie π
b) promien kola o polu 100π
c)pole kola o obwodzie π
d) obwod kola o polu 144π
a]
2πr=π / ;π
2r=1
r=1/2
b]
πr²=100π /;π
r²=100
r=√100
r=10
c]
2πr=π
p=π(1/2)²=1/4π
d]
πr²=144π
r²=144
r=√144
r=12
obwód=2πr=2π×12=24π
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a]
2πr=π / ;π
2r=1
r=1/2
b]
πr²=100π /;π
r²=100
r=√100
r=10
c]
2πr=π
2r=1
r=1/2
p=π(1/2)²=1/4π
d]
πr²=144π
r²=144
r=√144
r=12
obwód=2πr=2π×12=24π