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diameter 30 cm,berapa keliling lingkaran?

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berapa keliling lingkaran

hidayat Train Asked on February 13, 2016 in Matematika.

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Rumus keliling lingkaran = 2 x phi x r / phi x d
dengan phi = 22/7 = 3,14
d : diameter
r : jari-jari

keliling lingkaran = 3,14 x 30 = 94,2 cm

Kevin Fantasia Train Answered on February 14, 2016.

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