SOLUTION: a box 18 cm by 9cm by 15 cm is being used to ship two cylindrical candles. Each candle has a diameter of 9cm and a height of 15cm. What is the volume of the empty space in the box?

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Question 804038: a box 18 cm by 9cm by 15 cm is being used to ship two cylindrical candles. Each candle has a diameter of 9cm and a height of 15cm. What is the volume of the empty space in the box? What percent of the box is empty?
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
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a box 18 cm by 9cm by 15 cm is being used to ship two cylindrical candles.
18 * 9 * 15 = 2430 cu/cm is the vol of the box
:
Each candle has a diameter of 9cm and a height of 15cm.
2* pi%2A4.5%5E2%2A15 = 1908.5 cu/cm is the vol of the candles
:
What is the volume of the empty space in the box?
2430 - 1908.5 = 521.5 cu/cm is empty space
:
What percent of the box is empty?
521.5%2F2430 * 100 = 21.5% is empty