Jawabanmu

2014-05-30T11:05:33+07:00
Luas permukaan
= 2 luas alas + K . tinggi
= 2 (25 . 12) + (2 . 37 . 9)
= 600 + 666
= 1266
2014-05-30T11:57:43+07:00
Dik: p= 25cm
l= 12cm
t=9 cm
dit= luas permukaan....?
jb: lp= 2 la + keliling alas . t
= 2 . (25 x12) + 2(25+12) x 9
= 600+ 666
=1266cm^2