SOLUTION: A hollow cast iron ball has outer diameter 15 ft. and inner diameter of 12 ft. Find weight.
A cu. in. of cast iron weighs .26 lbs.
A ball is a sphere.
Volume = 4/3 * pi
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A cu. in. of cast iron weighs .26 lbs.
A ball is a sphere.
Volume = 4/3 * pi
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Question 1134081: A hollow cast iron ball has outer diameter 15 ft. and inner diameter of 12 ft. Find weight.
A cu. in. of cast iron weighs .26 lbs.
A ball is a sphere.
Volume = 4/3 * pi * r^3.
How do I solve?
You can put this solution on YOUR website! Find the volume of the 15' sphere.
Subtract the volume of the 12' sphere.
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Convert cubic feet to cubic inches.
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Multiply the difference by the density.
That's the weight.
