diameter 30 cm,berapa keliling lingkaran?

berapa keliling lingkaran

Train Asked on February 13, 2016 in Matematika.
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1 Answer(s)

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

Train Answered on February 14, 2016.
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