tolong ya pake cara cari nomor 29 dan 30 ok pake cara cari plisss

no. 29 = Lpermukaan kubus = s×s×6 = 120×120×6=14400×6=84600=A
no. 30 = v tabung= phi × r×r×t = 3,14×(d÷2)×(d×2)×t=314/100 × 10×10×40= 314×40 =12560(A)

luas permukaan kubus 6xs2
=6x120x120
=6x14400
=86.400 cm2

volume tabung phi x r x r x t
tinggi= 40 cm
diameter=20 cm..jari2=diameter/2..20/2=10

=3,14x10x10x40
=314x40
=12.560 cm2.
moga membntu