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anonymous

  • 5 years ago

multiple choice question

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  1. anonymous
    • 5 years ago
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  2. anonymous
    • 5 years ago
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    hi do you know the formula for the surface area and lateral area of these two solids?

  3. anonymous
    • 5 years ago
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    no

  4. anonymous
    • 5 years ago
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    oh ok,,you can look in the web...look for the lateral surface area of cylinder, then the surface area of it..do u wanna do that first?

  5. anonymous
    • 5 years ago
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    not really cuz my computer is slow and i cant open another tab

  6. anonymous
    • 5 years ago
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    ok for the prism first,, SA = 2(LW+HL+HW) ..... L= LENGTH, H=HEIGHT, W=WIDTH FOR THE CYLINDER SA=2piR^2+2PiRH ....pi=3.1416 , r=radius h=height of cylinder

  7. anonymous
    • 5 years ago
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    #8 would be b #9 would be a

  8. anonymous
    • 5 years ago
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    did you try solving it first?

  9. anonymous
    • 5 years ago
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    no

  10. anonymous
    • 5 years ago
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    for the cylinder the surface area would be 471

  11. anonymous
    • 5 years ago
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    lets try it...for cyllinder sa=2pi rh=2*3.1416*2.5*10=50pi=50*3.1416=157.079

  12. anonymous
    • 5 years ago
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    i got 471 2*3.14*5^2+2*3.14*5*10 157+314=471

  13. anonymous
    • 5 years ago
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    for prism is that 6 and 4? or 8 and 4?

  14. anonymous
    • 5 years ago
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    prism is 6 and 4

  15. anonymous
    • 5 years ago
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    yes im sorry, ok you are right, i was solving for lateral area

  16. anonymous
    • 5 years ago
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    ok

  17. anonymous
    • 5 years ago
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    so this 157.079 is the lateral area of the cylinder

  18. anonymous
    • 5 years ago
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    for lateral area of prism is 4x5+4x5+4x4+4x6=?

  19. anonymous
    • 5 years ago
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    3000

  20. anonymous
    • 5 years ago
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    ok which is greater? for lateral area

  21. anonymous
    • 5 years ago
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    prism

  22. anonymous
    • 5 years ago
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    wait that is 20+20+16+24=80 did you see it?

  23. anonymous
    • 5 years ago
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    yea.. i acidiantly did it all together

  24. anonymous
    • 5 years ago
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    so the cylinder for lateral area

  25. anonymous
    • 5 years ago
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    yes then try for SA for the other one

  26. anonymous
    • 5 years ago
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    the SA for the cylinder is 471

  27. anonymous
    • 5 years ago
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    how do i find the SA for the prism?

  28. anonymous
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    wait for cyl, use r=2.5 instead of diameter=10

  29. anonymous
    • 5 years ago
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    sorry i mean use r=2.5 not d=5

  30. anonymous
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    r=5 h=10

  31. anonymous
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    d=5 r=2.5 h=10

  32. anonymous
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    i though d was id the line went all the way across

  33. anonymous
    • 5 years ago
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    d=diameter of the circumference of the circle. r=radius of the circle

  34. anonymous
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    r=d/2

  35. anonymous
    • 5 years ago
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    SA=196.25

  36. anonymous
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    CYL SA=2*3.1416*2.5^2 +2*3.1416*2.5*10=196.35 APPROX

  37. anonymous
    • 5 years ago
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    ok

  38. anonymous
    • 5 years ago
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    FOR PRISM ITS THE 2 TOP COVER PLUS THE LATERAL AREA

  39. anonymous
    • 5 years ago
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    80+4+5

  40. anonymous
    • 5 years ago
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    89

  41. anonymous
    • 5 years ago
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    PRISM SA=2(24+20+30)=148

  42. anonymous
    • 5 years ago
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    so this one would be A

  43. anonymous
    • 5 years ago
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    OK,,,,GOOD LUCK

  44. anonymous
    • 5 years ago
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    thanks

  45. anonymous
    • 5 years ago
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    WC

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