Given,

Radius of the sphere = 8 cm

Radius of the ball we made = 1 cm

So,

Volume of sphere (when r = 1 cm) = πr³

= × 1 × 1 × 1 × π cm³

Volume of sphere (when r = 8 cm) = πr³

= × 8 × 8 × 8 × π cm³

Let the number of balls be n;

Then we have;

n × × 1 × 1 × 1 × π = × 8 × 8 × 8 × π

n = = 512

Hence, the number of lead balls can be made is 512.