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horsegal244

  • one year ago

I Need Help I Will Give Fan And Medals!

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  1. horsegal244
    • one year ago
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    A circular picture is 8 inches in diameter. Part A What is the area of the picture in square inches? A. 4π square inches B. 8π square inches C. 16π square inches D. 32π square inches Part B A frame that is 2 inches wide surrounds the picture. What is the total area of the picture and the frame in square inches? A. 4π square inches B. 12π square inches C. 36π square inches D. 40π square inches

  2. horsegal244
    • one year ago
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    @hybrik

  3. anonymous
    • one year ago
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    \[A = \pi r^2\]

  4. horsegal244
    • one year ago
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    ummmmm

  5. anonymous
    • one year ago
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    =π·42≈50.26548

  6. horsegal244
    • one year ago
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    I don't get it.......

  7. anonymous
    • one year ago
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    oh the answer is in pi so 42 pi is your answer

  8. anonymous
    • one year ago
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    what don't you get?

  9. horsegal244
    • one year ago
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    oh

  10. horsegal244
    • one year ago
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    But 42 is not in the answers...

  11. anonymous
    • one year ago
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    or 16 pi sry

  12. welshfella
    • one year ago
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    Part A = pi r^2 = pi 4^2

  13. welshfella
    • one year ago
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    as 4 is the radius

  14. anonymous
    • one year ago
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    idk why I wrote 42 xD

  15. welshfella
    • one year ago
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    Part B the radius increases by 2 so area = pi * 6^2

  16. horsegal244
    • one year ago
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    @Chumpian How did you get that?

  17. horsegal244
    • one year ago
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    Part A

  18. anonymous
    • one year ago
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    \[A = \pi r^2\] so 4 is the radius (r) and what's 4 squared?

  19. horsegal244
    • one year ago
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    16

  20. anonymous
    • one year ago
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    yep and they want the answer in terms of pi so 16pi is your answer

  21. horsegal244
    • one year ago
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    Now i need part B

  22. anonymous
    • one year ago
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    So again you use the equation \[A = \pi r^2\]

  23. horsegal244
    • one year ago
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    ok

  24. anonymous
    • one year ago
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    They said they added two inches to the frame

  25. anonymous
    • one year ago
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    so the radius is now 6

  26. anonymous
    • one year ago
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    So what do you do next?

  27. welshfella
    • one year ago
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    area = pi r^2 where r = radius r is now 6 so its pi * 6^2 = 36 pi

  28. anonymous
    • one year ago
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    Well I was gonna let her do that but thx xD

  29. welshfella
    • one year ago
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    oh sorry

  30. horsegal244
    • one year ago
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    Ok sry what is going on?

  31. horsegal244
    • one year ago
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    @Chumpian

  32. anonymous
    • one year ago
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    ok so the radius for part B is 6

  33. horsegal244
    • one year ago
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    ok

  34. anonymous
    • one year ago
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    We are doing the same thing as we did in part A

  35. horsegal244
    • one year ago
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    ok

  36. anonymous
    • one year ago
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    so what do we do with the radius that equals 6

  37. horsegal244
    • one year ago
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    idrk

  38. anonymous
    • one year ago
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    \[A = \pi r^2\]

  39. horsegal244
    • one year ago
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    Ok but that is A

  40. anonymous
    • one year ago
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    but we are doing the same thing as Part A but just with a larger radius

  41. horsegal244
    • one year ago
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    Ok

  42. anonymous
    • one year ago
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    So when we plug in the 6 \[A = \pi 6^2\]

  43. anonymous
    • one year ago
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    What do you do with the 6?

  44. horsegal244
    • one year ago
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    multiply is by itself so 12

  45. anonymous
    • one year ago
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    that would be 6 x 2 = 12 but squaring a number would be 6 x 6 = 36

  46. horsegal244
    • one year ago
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    Oh yea sorry

  47. horsegal244
    • one year ago
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    so then 36?

  48. anonymous
    • one year ago
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    yep and they want it in terms of pi So your answer is?

  49. horsegal244
    • one year ago
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    36π

  50. anonymous
    • one year ago
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    yep :)

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