Jawabanmu

2014-05-30T18:08:55+07:00
Lp= (pxl) + 4(1/2xaxt)
= (20x20) + 4( 1/2x20x26)
= 400 + 1040
= 1440cm2
2014-05-30T18:15:43+07:00
T sisi tegak = 24 cm
Luas= Luas alas + 4.luas sisi tegak
= 20.20 + 4.1/2.20.24
=400 + 960
=1360cm²

Volume=1/3.luas alas.tinggi
=1/3.400.21,8
=2906,7 cm³