tolong dijawab ya....soalnya yang dilingkari

r = d : 2
= 20 : 2
= 10 cm

Volume bola = 4/3 × pi × r × r × r
= 4/3 × 3,14 × 10 × 10 × 10
= 4186,67 cm^3

berat = volum × 15 gram
= 4186,67 × 15
= 62800,05 gram