Jawabanmu

2014-03-11T20:15:47+07:00
Circumference = keliling=37,68cm
radius of circle = jari jari=?

K=2 x π x r
37,68cm= 2 x 3,14 x r
37,68cm=6,28 x r
r= 37,68cm : 6,28
r= 6cm
c. 6 cm