Jawabanmu

2014-09-13T12:37:41+07:00
L. Permukaan = 4*phi *jari jari =4*22/7*28 =352cm2
2014-09-13T12:52:51+07:00
L. Permukaan = 4*phi *jari jari =4*22/7*28 =352cm2