hitunglah volume bangun ruang di bawah ini please help me

1). v = phi x r x r x t
= 22/7 x 14 x 14 x 50
= 30.800 cm3
= 30,80 cm3
2). v= 1/2 x a x t x tp
= 2 x 1/2 x 12 x 5 x 30
= 4.500 cm
3). v= phi x r x r x t
= 22/7 x 4 x 4 x 35
= 1760 cm
4). v= luas alas x tinggi prisma
= ( 1/2 x 7 x 24) x 25
=2100 x 40 = 84.000 cm
5). L1 = 1/2 x a x t
= 1/2 x 12 x 18
= 108 cm
L2 = phi x r x r x t
= 22/7 x 14 x 14 x 18
= 1.108 cm
= L1 + L2
= 108 + 1.108
=1.216 cm

maaf klau salah