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anonymous

  • 5 years ago

volume of a cylinder is1131.0 cubic centimeters. the lengh of the cylinder is 40 centimeters. what is the radius of the cylinder

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  1. anonymous
    • 5 years ago
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    pi r^2 (40) = 1131 r =sqrt (1131/(40pi))

  2. anonymous
    • 5 years ago
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    i dont get it

  3. anonymous
    • 5 years ago
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    helloooooooooooooooooooo

  4. anonymous
    • 5 years ago
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    hello are you still there

  5. myininaya
    • 5 years ago
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    volume of cylinder is pi* r^2*h

  6. myininaya
    • 5 years ago
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    V=1131.0, h=40 solve for r

  7. anonymous
    • 5 years ago
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    what does ^ mean

  8. myininaya
    • 5 years ago
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    it means to the power of

  9. anonymous
    • 5 years ago
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    how do i solve for r

  10. anonymous
    • 5 years ago
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    okay thanx

  11. myininaya
    • 5 years ago
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    use the equation to solve for r: you have V=pi*r^2*h were h=40 and V=1131

  12. myininaya
    • 5 years ago
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    1131=pi*r^2*40

  13. anonymous
    • 5 years ago
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    i like mtininaya better please help me

  14. myininaya
    • 5 years ago
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    so since we want to solve for r, we need to divide both sides by 40 and pi

  15. myininaya
    • 5 years ago
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    1131/(pi*40)=r^2

  16. myininaya
    • 5 years ago
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    take the square root of both sides to get r

  17. anonymous
    • 5 years ago
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    im confused sorry can u go step by step

  18. myininaya
    • 5 years ago
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    1 Attachment
  19. myininaya
    • 5 years ago
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    click on that up there

  20. myininaya
    • 5 years ago
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    hows that?

  21. myininaya
    • 5 years ago
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    I divided both sides by h and pi to get r^2 by itself. i took square root of boths to get r. and then volume=V=1131 and height=h=40 and radius=r

  22. anonymous
    • 5 years ago
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    is it 1 centimeter

  23. anonymous
    • 5 years ago
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    is it 1 centimeter

  24. myininaya
    • 5 years ago
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    did you look at the attachment?

  25. myininaya
    • 5 years ago
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    the radius is sqrt(1131/[40pi])

  26. anonymous
    • 5 years ago
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    so to divide 1131/40pi i first mulyiply 40 times 3.14 right?

  27. myininaya
    • 5 years ago
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    If you do that, you will get an approximation. I would stop where I stoped

  28. anonymous
    • 5 years ago
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    bt i dnt get what the answer is because in my paper is multipal choice. a.1 centimeter b.2 centimeter c.3centimeter d.centimeter

  29. myininaya
    • 5 years ago
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    ok so they rounded it?

  30. myininaya
    • 5 years ago
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    i get 3 centimeters then

  31. anonymous
    • 5 years ago
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    can u show me how u got everything in the attach file

  32. myininaya
    • 5 years ago
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    what kindof calculator do you have?

  33. myininaya
    • 5 years ago
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    ti83?

  34. anonymous
    • 5 years ago
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    the one in the computer

  35. myininaya
    • 5 years ago
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    ok so type 40

  36. anonymous
    • 5 years ago
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    40

  37. myininaya
    • 5 years ago
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    hit the multplication sign

  38. myininaya
    • 5 years ago
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    type 3.14

  39. myininaya
    • 5 years ago
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    hit the equal

  40. myininaya
    • 5 years ago
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    remember 125.6

  41. myininaya
    • 5 years ago
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    now do 1131 and hit the division sign then type in 125.6

  42. myininaya
    • 5 years ago
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    then last step hit the square root sign

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