tolong bantu jawab pakai cara. thanks

t = akar 20^2 -12^2
t = akar 400-144
t = akar 256 = 16cm

v1/2 bola = 1/2 x 4/3 × 3,14 × 12 × 12 ×12
= 3617,28 cm^3

v kerucut = 1/3 × 3,14 × 12 × 16
= 2411,52
v bandul = v1/2bola + v kerucut
= 3617,28 cm^3 + 2411,52 cm^3
= 6028,8 cm^3

berat bandul = 6028,8 × 10
= 60288g = 60,288kg (C)