Respuesta :

alvinsunnychirayathm

Explanation:

volume of sphere= 4/3πr^3

= 4/3 × 22/7 × 21×21×21

=88×441

= 38,808cm^3

density = g/cm^3

5kg = 5000g

= 5000/38,808

= 0.1289g/cm^3