Question

Hitung volume bola yang luas permukaanya 1256 cm² (π =3,14)

Answer 1

L p = 4 × π r^2
1256 = 4 × 3,14 × r^2
1256 = 12,56 × r^2
r^2 = 1256/12,56
r^2 = 100
r = √100 = 10

V = 4/3 × π × r^2
= 4/3 × 3,14 × 10^2
= 4/3 × 314
= 1256/3
= 418,66 cm3