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Find the volume of the hollow center.
The hollow center is a sphere of radius 1 in.
Writing the volume formula:
Substituting 1 for
Use a calculator.
Using a calculator,
The volume of the hollow center is about 4.2 in.
Relate the volume of the rubber shell to the volume of the ball and its hollow center.
Volume of rubber shell
= volume of ball – volume of hollow center
Substituting 9.2 for volume of ball and 4.2 for volume of hollow center,
= 9.2 – 4.2
The volume of the rubber shell is about 5 in.
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