volume kubus yang panjang diagonal sisinya 8√2 adalah......cm³ a.64√2 b.128√2 c.512 d.729

pj diagonal =8√2
r√2=8√2
r=8√2/√2
r=8
maka v=r^3
v=8^3
v=512 cm^3

Diagonal sisi = s√2
8√2 = s√2
s = 8√2 / √2
s = 8 cm

V = s³
V = 8³
V = 512 cm³ (C) ✔