Jawabanmu

Jawaban paling cerdas!
2014-09-10T13:54:28+07:00
Luas permukaan pipa = luas selimut saja
karena pipa kan bolong, jadi gak pake alas
luas selimut = diameter x pi x panjang
luas permukaan pipa = diameter x pi x panjang
110 = diameter x 3.14 x 25
diameter = 110 / (3.14 x 25)
diameter = 110 / 78.5
diameter = 110 / 78.5
diameter = sekitar 1.4
3 3 3