Question

how many balls, each of radius 1cm, can be made from a solid sphere of lead of radius 8 cm?

Answer 1

volume of solid sphere=4/3πr^3
4/3×π×8×8×8
volume of ball=4/3πr^3
4/3×π×1×1×1

number of balls=(4/3×π×8×8×8)/(4/3×π×1×1×1)
=8×8×8
=512

Answer 2

Vol(solid sphere) = n*Vol( balls with radii 1 cm)

4/3*π*64*8 = n*4/3*π*1
64*8=n

512=n

we can make 512 balls of radii 1 cm out of solid sphere of radii 8 cm.

HOPE IT HELPS!!!!