Jawabanmu

2014-06-05T20:04:49+07:00
K= π*d = 22/ 7 * 28 = 88 cm
K=2phir
kalau diameternya bs dibagi 7 boleh pakai phi*d
2x22\7x14 = 88cm
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2014-06-05T20:06:54+07:00
Jari2 = 14 cm
d = 14 cm x 2 = 28 cm
pi = 22/7

kel = 22/7 x 28
kel = 88 cm
2 5 2