Jawabanmu

2014-05-31T19:19:45+07:00
2014-05-31T19:24:13+07:00
K = 44 cm
π =  \frac{22}{7}
K = 2πr
44 = 2 x  \frac{22}{7} x r
44 =  \frac{44}{7} x r
r = 44 x  \frac{7}{44}
r = 7 cm

L = πr²
L =  \frac{22}{7} x 7 x 7
L = 154 cm²

Jadi jawabannya adalah B. 154 cm²