SOLUTION: A ball of lead 4 cm in diameter is covered with gold .If the volume of the gold and lead are equal,then find the thickness of gold???
@help me sir
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@help me sir
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Question 935228: A ball of lead 4 cm in diameter is covered with gold .If the volume of the gold and lead are equal,then find the thickness of gold???
@help me sir Answer by josgarithmetic(39617) (Show Source):
You can put this solution on YOUR website! R, radius of whole ball
r, radius of inner ball (just the lead)
Using x as radius, is volume formula for sphere.
THINK: volume of whole ball minus volume of inner ball is the volume of the gold shell. Volume of gold shell equals volume of inner ball.
THAT is help, and I leave the rest of the solution undone but for you to do. Watch carefully that DIAMETER is 2*radius.
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