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tayluvsya

  • 3 years ago

help plez

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  1. tayluvsya
    • 3 years ago
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  2. ZeHanz
    • 3 years ago
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    You are probably aware of the formula to calculate the volume of a sphere with radius r:\[V=\frac{ 4 }{ 3 }\pi r^3\]so you only need to convert the diameter (28 cm) to the radius, and put that value into the formula...

  3. tayluvsya
    • 3 years ago
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    thnks @ZeHanz

  4. ZeHanz
    • 3 years ago
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    YW! ;)

  5. tayluvsya
    • 3 years ago
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    i still didnt get it right i need the answer plez

  6. tayluvsya
    • 3 years ago
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    its soooooooo confusing

  7. AravindG
    • 3 years ago
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    can u show ur working ? let me see where are u getting stuck

  8. tayluvsya
    • 3 years ago
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    i dont get it at all

  9. AravindG
    • 3 years ago
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    just do what zehanz said above :)

  10. AravindG
    • 3 years ago
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    just use the formula !

  11. tayluvsya
    • 3 years ago
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    i dont get it

  12. AravindG
    • 3 years ago
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    what value did u get for r ?

  13. lilcici
    • 3 years ago
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    28

  14. ZeHanz
    • 3 years ago
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    No, 28 is the diameter :(

  15. lilcici
    • 3 years ago
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    so 24

  16. lilcici
    • 3 years ago
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    \[V=\frac{ 4 }{ 3 } \pi 24^{3}\]

  17. ZeHanz
    • 3 years ago
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    In a circle, the radius is half the diameter, so if the diameter is 28, the radius is 14. If you want to solve problems such as the above, this knowledge is rather essential, I'm afraid...

  18. lilcici
    • 3 years ago
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    im srry just tired forgot to half my problem thnks for correcting me

  19. ZeHanz
    • 3 years ago
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    yw!

  20. lilcici
    • 3 years ago
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    \[V=\frac{ 4 }{ 3 } \pi 14^{3}=11494.04032\]

  21. ZeHanz
    • 3 years ago
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    Right! So if you round to the nearest 500, you'll have the answer option of the original problem.

  22. lilcici
    • 3 years ago
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    thnks again

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