Jawabanmu

2014-05-25T10:32:01+07:00
1. keliling alas = sxs
36 = s2
s = 6
v= s3
v= 216

2.maaf lupa caranya.
2014-05-25T10:35:39+07:00
1. keliling alas = 4 x s
             36 =  4 x s
             s   = 36/4 = 9 cm
volume kubus = s x s x s = 9 x 9 x 9 = 729 cm³
2. s² = a² + b²
       =(2√3)² + (2√3)²
       = 12 + 12 = 24
   s = √24 = 2√6
volume kubus = s³ =( 2√6)³ = 48√6cm³