Jawabanmu

2014-06-17T20:05:18+07:00
4.)
p=12 cm
l=3cm
t=4cm

a. Panjang diagonal ruang
    √p² + t² + l²
 = √12²+4²+3²
 = √144+16+9
 = √169
 = 13 cm
2014-06-17T21:05:59+07:00
5. x=3m (tripel)
y=3+1=4m
L alas=(a+b)*t/2
=(1+4)*4/2
=5*4/2
=20/2
=10m
V=L alas*t prisma
=10*20
=200m