A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • 5 years ago

you have two containers. one is a cylinder with a height of 15 inches and a diameter of 10 inches. the other side is a cube with sides of 12 inches. what is the volume of the cylinder? what is the volume of the cube?

  • This Question is Closed
  1. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    volume of a cylendar = pi r^2 h. cube is length times width times depth

  2. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so the volume of the cylinder would be 1177.5 inches^3

  3. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    i get 1178.09, lemme try it again though

  4. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    well for pie i just use the first 3 numbers.. 3.14

  5. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ahh, yup that will do it

  6. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    and the cube would be 12*12=144

  7. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    that would only be the surface area of one side of the cube, its 12^3 height, width, and depth

  8. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so 1728inches^3

  9. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    you got it

  10. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    one more question: how many gallons of water are needed to fill the cylinder? (hint: 1 gallon of water is .1337ft^3)

  11. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    if you know one gallon takes up .1337 ft cubed, and the cyl has 1177 ft cubed of space then some division will get you how many gallons per cyl

  12. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    and are you sure its .1337 per gallon? that seems kinda small considering a gallon of milk is roughly a cubic foot in real life

  13. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    that means you'd need 10 gallons to fill one cubic foot, just seems big to me but maybe im wrong?

  14. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    oooooh we are dealing in inches here. your .1137 ft needs to be converted to inches (easy, 12 inches per foot) to get you cubic inches or you can go the other way anf find out how many cubic feet the cyl has and then do your division. gotta make sure the scales are correct and then its simple division

  15. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    i cant convert worth crap i dont understand converting

  16. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    okay, if you have 12 inches per foot, theres 24 inches in 2 feet (12*2), theres 36 inches in 3 feet (12*3). so that also means you could take some random number of inches, lets pick 247 (totally random) and we know that 20.5833 feet is the same as 247 inches. (247/12). do you see how it works?

  17. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    multiplying and dividing are really just the same thing, one is forward and one is backwards. division tells you how many of A is in B. multiplying tells you if you had A number of groups and B number of items per group, what is the total number of items

  18. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ok

  19. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so i would do 1177.5*12

  20. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    almost, conversion of cubic numbers is a bit more trickey. you can either convert before finding the answer in ^3 or if you do it afterward you need to remember that your dealing with a volume in 3 dimensions. because think about the physical shape of a cubic foot (a box that is a ft by ft by ft) now think about 12 1 inch cubes (little bigger than 12 dice) not quite the same size as eachother. thats because your forgetting a whole dimensions

  21. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    however, if you know taht there are 1728 cubic inches per cubic foot (thats a true statement btw) then you can do your one to one conversions

  22. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ok

  23. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    does that make sense?

  24. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    kinda

  25. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    well to get that 1728 number all you are doing is saying, i have 12 units up, 12 units deep and 12 units wide.

  26. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ok

  27. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so if you wanted to convert 4 cubic feet it would just be how many inches in one cubic foot times 4, aka 1728 times 4

  28. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    1177.5*4=4710

  29. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    sorry no, its not times 4 because that would be a 2X2X2 ft square. to find for a 4ft cubed would be 4*12=48 48^3=110592

  30. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    i meant to say 64 not 4 because it expands exponentially ie: 4^3 is what you multiply by (4^3=64)

  31. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    haha now i went and confused you more by typo-ing. im sorry about that. you have to remember that the number your multiplying by is cubed as well.

  32. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    im already confused

  33. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    its that 1728 number (how many cubic inches in a cubic foot) times how many cubic feet your finding ^3 example: 3 cubic feet has 1728*3^3 cubic inches in it. 24 cubic feet has 1728*24^3 cubic inches in it

  34. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    what i was saying before is you can figure it out by converting first if you want. so your 3 cubic feet has 3 feet in each direction. thats the same as 3*12=36 inches in each direction. now you can find cubic inces using those dimensions instead

  35. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so 1177.5*3^3

  36. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    wait a second. your cyl you have in inch form and your gallons is in feet form. are you going to do your comparison in feet or inches because we need them both in the same format first

  37. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ft

  38. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so we need to divide 1177.5 in cubed by 12 inches cubed, that gets us feet

  39. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    oh! heres an idea that one of my teaches tried with us years ago, maybe that will help you with conversions, you can use it for any conversion you want

  40. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ok

  41. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    well apparently i have no idea how to use the equations thinger on this site, so thats not going to work. basically you just need to know how many units to convert and then write out equivalent fractions and then cross out matching units that cancel out.

  42. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    huh?

  43. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    http://www.purplemath.com/modules/units.htm

  44. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    i give up onthis one

  45. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.