hitung jari jari lingkaran jika diketahui keliling nya sebagai berikut : a. 176 cm                 c. 157 cm b. 628 cm                 d. 1256

1. [tex]2. \frac{22}{7} r= 176 \frac{44}{7} r = 176 r = \frac{176.7}{44} r = 28 cm[/tex]

2. [tex]2* 3,14 r = 628 6,28r = 628 r = \frac{628}{6,28} r = 100[/tex]

3. [tex]2 * 3,14r = 157 6,28r= 157 r= \frac{157}{6,28} r= 25[/tex]

4. [tex]2*3,14r = 1256 6.28r= 1256 r= \frac{1256}{6.28} r= 200[/tex]

a. 176 = 2 X 22/7 X r
r = 28
b. 628 = 2 X 3,14 X r
r = 100
c. 157 = 2 X 3,14 X r
r = 25
d. 1256 = 2 X 3,14 X r
r = 200