Jawabanmu

2014-05-16T15:02:29+07:00
K = 2πr
264 = 2.22/7.r
264 = 44/7.r
264.7/44 = r
42   = r

C.42 cm
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2014-05-16T15:02:56+07:00
Keliling= phi x d
264= 22/7 x d
264= 3,14 x d
d= 264/ 3,14
d= 84

r= d : 2
r= 84 : 2
r= 42 cm  C.
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