Jawabanmu

2014-03-02T11:11:06+07:00
72°/360° x 2 x 22/7 x 40
=1/5 x 2 x 22/7 x 40
= 50,28 cm
phi nya harus 3,14
oo, tadi disoal gk ditulis sih
Jawaban paling cerdas!
2014-03-02T11:11:43+07:00
72/360*2*π*r
=1/5*2*3,14*40
=6,28*8
=50,24 cm
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