Jawabanmu

2014-02-10T22:14:03+07:00
Keliling = 2×π×r
110 = 2×22/7×r
110 = 44r/7
r = 770/44
r = 17,5 m
110 = 2.22/7.r
110 = 44/7 . r
r = 110 : 44/7
r = 17,5
mohon dicek ulang takut e ada kesalahan :D
110 = 44r/7 kali silang
7 x 110 = 44r
770 = 44r
r = 770/44
r = 17,5 :D
2014-02-10T22:15:18+07:00
L = π2r
110 = 22/7 X 2r
110 X 7 = 22 X 2r
770 = 44r
r = 770/44
r =17,5 m
2 5 2