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this

  • 3 years ago

some on help me plllz a sphere has a surface area of 32in^2 a,radius=_______ b,volume=_________

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  1. ajprincess
    • 3 years ago
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    Surface area of a sphere = \(4\pi r^2\) \(2=4\pi r^2\) From this r(radius) can be found in terms of \(\pi\) Volume of a sphere=\(\large\frac{4}{3}\pi r^3\) Can u find nw? @this

  2. this
    • 3 years ago
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    sa=4pi r^2 32/4pi=4pir^2/4pi 32=r^2 i dont know what to do next):

  3. ajprincess
    • 3 years ago
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    32/4pi=4pi r^2/4pi 8/pi=r^2 to find r. find the sqrt of 8/pi r=sqrt(8/pi)

  4. ajprincess
    • 3 years ago
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    to find the volume use v=4/3pi r^3

  5. this
    • 3 years ago
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    thanks so much @ajprincess

  6. ajprincess
    • 3 years ago
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    Welcome:) Did u find the volume?

  7. this
    • 3 years ago
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    i got 2.25=r is that right?

  8. ajprincess
    • 3 years ago
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    pi=?

  9. this
    • 3 years ago
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    i cancel out the pi

  10. ajprincess
    • 3 years ago
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    what did use for pi? 3.14 or 22/7?

  11. this
    • 3 years ago
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    i use 3.48

  12. this
    • 3 years ago
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    wait let me show u how i did it the whole thing

  13. ajprincess
    • 3 years ago
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    ok:)

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