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anonymous

  • one year ago

Janine inflated 1 ball to a radius of 18 cm and another ball to a radius of 12 cm. How much more air was in the larger ball? Use 3.14 to approximate pi and express your answer in hundredths. cm^3

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  1. anonymous
    • one year ago
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    @amistre64 @dmndlife24 @texaschic101 @Michele_Laino @JoannaBlackwelder @Thesmarterone @TheSmartOne

  2. anonymous
    • one year ago
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    volume of 18 cm ball - volume of 12 cm ball

  3. anonymous
    • one year ago
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    so pi18^2

  4. anonymous
    • one year ago
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    \[V=\frac{4}{3}*\pi*r^3\]

  5. anonymous
    • one year ago
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    1728x3.14x4/3

  6. anonymous
    • one year ago
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    5425.92 x 4/3

  7. anonymous
    • one year ago
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    can i turn 4/3 into a decimal?

  8. anonymous
    • one year ago
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    4/3 = 1 1/3 = 1.3333333333333333333333333 for infinity

  9. anonymous
    • one year ago
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    how u multiply it then?

  10. anonymous
    • one year ago
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    \[\frac{5425.92*4}{3}\]

  11. anonymous
    • one year ago
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    7234.56

  12. anonymous
    • one year ago
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    Right. Now we have to subtract this from the volume of the 18 cm ball.

  13. anonymous
    • one year ago
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    24416.64

  14. anonymous
    • one year ago
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    Right. So all we have left is to find the difference between them. In other words, 24416.64-7234.56=?

  15. anonymous
    • one year ago
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    17182.08

  16. anonymous
    • one year ago
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    And that'd be your answer: 17,182.08 cm^3

  17. anonymous
    • one year ago
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    thanks

  18. anonymous
    • one year ago
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    No problem :)

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