Jawabanmu

2014-09-08T20:15:43+07:00
Luas selimut = 2 \pi r.t
= 2x3,14x4x16,5
=414,48 cm
cmiiw
2014-09-08T20:15:50+07:00
L.selimt tbng= 2 \pi rt
                    = 2x3,14x4x16,5
                    =414,48 cm2