tolong dong besok di kumpulin :)

1) r = 180 : 12 = 15cm
V kubus = r x r x r
= 15 x 15 x 15
= 3375 cm3

2) L persegi = r^2
r = √64
r = 8cm
V kubus = r x r x r
= 8 x 8 x 8
= 512 cm3