12. …………………(pakai cara dan rumus)

12.) Diket =

=> L.p = 864 cm

dit =

=> rusuk kubus ?

=> volume ?

jawab

=> L.p kubus = 6 x s^2

=> 864 cn = 6 x s^2

=> 864 cm ÷ 6

=> s^2 = 144 cm

=> 144 cm = 12 x 12

jadi panjang rusuknya => 12 cm

=> rusuk = 12 cm

volume kubus = s x s x s

=> 12 cm x 12 cm x 12 cm

=> 1.728 cm

jawaban = ( B ) 1.728

Lp=6.s.s
864=6.s.s
864 : 6=S
144 =s.s
12=s

v=s.s.s
v=12.12.12
v=1.728

jawabannya B