Volume bola = 4/3 x π × r3
Luas permukaan bola = 4 × π × r2
a) Luas = 4 x π x 12 x 12
= 576π m2
Volume = 4/3 x π x 12 x 12 x 12
= 2304π m3
b) Luas = 4 x π x 5 x 5
= 100π cm2
Volume = 4/3 x π x 5 x 5 x 5
= 500/3π cm3
c) Luas = 4 x π x 6 x 6
= 144π dm2
Volume = 4/3 x π x 6 x 6 x 6
= 288π dm3