Find the no. of lead balls of radius 1cm each that can be made from a sphere of radius 4cm.
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Answer:
In the given sphere
radius=8 cm
V
1
Volume of the sphere=
3
4
πr
3
=
3
4
π(8)
3
=
3
2048
πcu.cm
In the given ball
radius = 1 cm.
V
2
=Volume of the ball=
3
4
πr
3
=
3
4
π(1)
3
=
3
4
πcu.cm
Number of balls
V
2
V
1
=
3
204
×
4π
3
=512 balls
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