A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • 4 years ago

a painter is hired to paint a silo that had the dimmensions shown below. one gallon of paintcovers 400 square feet. how many gallons of paint does the painter need? *please wait while i draw the figure

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

    |dw:1327633952599:dw|

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

    2(22/7)r = (44/7)(15)=660/7feet^2 this is the bottem of the container (ill make it into decimals later)

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

    oh sry :P

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

    that is circumference of the bottem. Now we'll find the area of the middle section of the silo by multiplying it by 40 to get (660/7)(40)=26400/7 its more accurate to wait till the very end to round it off but if your still in high school then i guess you can round it off to 2 dec one time

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

    ok now to find the area of the bottem (22/7)r^2 (22/7)(15)^2 (22/7)(225) 4950/7

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

    okay so, the circumference is 94.28?

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

    94.29 not 94.28

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

    okay:) so the middle part is 3771.42, right?

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

    no its 3771.43 because 3771.428 is closer to 3771.43 than 3771.42

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

    sorry :p so, on the 3rd explanation what do you mean by bottom?

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

    the bottom of the silo, in other words the circle with radius 15

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

    with the circumference of 94.3?

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

    yes

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

    but make it two dec places not 1

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

    okay. so do i need to do anythign wih that triangle above the silo??

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

    for the area of the middle section dont use fractions then put 94.29x40 = 3771.6

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

    yes you do were actually only half way through this question

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

    okay.

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

    and the area for the bottom is 4950/7 = 707.14

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

    bottom of silo?

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

    si :)

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

    lol okay:) so now the pyramid thing. what ami supposed to do?

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

    for the cone at the top now this is just something u have to learn. A cone is also a semi circle and the 17feet is the radius of that semi circle

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

    okay

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

    so (1/2)(22/7)r^2 (11/7)(17^2) (11/7)(289) 3179/7 454.14

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

    whats that?

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

    the area of the pyramid at the top (cone) which is 454.14feet^2

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

    okay:)

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

    u understood wat i did?

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

    please explain.

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

    \[1/2( \pi r ^{2})\]

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

    |dw:1327636571579:dw| so we find the area of the circle and then divide it by 2 using that formulae

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

    okay. :) so now we add both answers to get the whole thing, right?

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

    i see.

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

    all 3 yes

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

    3? we have the bottom of silo and pyramid.

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

    oh

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

    also the middle section

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

    454+3771+707.14?

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

    where u got 454? and it is 3771.6

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

    sorryabout the .6:) i thought the 454 was the area of the pyramid?

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

    oh yes my bad and its 454.14 feet dont forget about the dec places

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

    all right. :)

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

    and then we divide by 400?

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

    so 707.14+454.14+3771.6= 4932.88feet^2

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

    and yes

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

    yes. :)

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

    therefore to conclude this confusing and long question 4932.88/400= 12.3322 gallons

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

    also dont forget to put units and decimal

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

    yes. thank you hawkcrimson. for the patience? lol thanks:) and i won't forget te decimals :)

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

    im watching u like a hawk so u better not :P

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

    bahahaha lol. i won't :D

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

    kk take care bye

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

    bye and thanks:)

  55. 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.