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p=5+l -> p=5+30=35
Ka=2(p+l)=130
=2(5+l+l)=130
2(5+2l)=130
10+4l=130
4l=130-10
4l=120
l=30
La=p.l=35.30=1050
Vp=La.tp
Vp=1050.16
=16800
panjang = x+5
K = 2(p+l)
130 = 2(x+5+x)
65 = 2x+5
60 = 2x
x = 60/2
x = 30
lebar = 30 cm
panjang = x+5 = 30+ 5 = 35 cm
Volume prisma = luas alas.tinggi
= 35.30.16
= 16.800 cm³