Jawabanmu

2014-05-27T17:12:37+07:00
Sudut x/360 = p. busur/kel.lingkaran
36/360 = x/7 x 2 x 22/7
1/10 = x/44
44 = 10x
x = 44/10
x = 4,4 jd jwb nya A
Jawaban paling cerdas!
2014-05-27T17:13:27+07:00
K = 2πr 
= 2 x 22/7 x 7 = 44 cm
pj busur = 36/360 x 44
= 4,4 cm
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