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π=3,14=22/7
r=7⅓ cm=22/3 cm
obwód 2πr=2*22/7*22/3= 968/21cm=46,0952,,,,cm
pole πr²=22/7*22/3*22/3=10648/63 cm²
lub z zostawieniem π
obwód 2πr=2*π*22/3=44/3π cm
pole πr²=π*22/3*22/3=484/9π cm²