jari jari=10, berapa kelilingnya

r = 10
d = 2 × r = 2 × 10 = 20
π = 3,14

K = π d
= 3,14 × 20
= 62,8

Semoga membantu

Keliling Lingkaran = π × r × 2 = 3,14 × 20 = 62,8 cm

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