Luas LingkaranL = π × d²/4 = π × r²m2Keliling LingkaranK = π × d = 2 × π × rmDiameter Lingkarand = 2 × rm
L= πr² atau L=1/4 πd²
kl= 2πr atau kl=πd
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Luas LingkaranL = π × d²/4 = π × r²m2Keliling LingkaranK = π × d = 2 × π × rmDiameter Lingkarand = 2 × rm
L= πr² atau L=1/4 πd²
kl= 2πr atau kl=πd