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anonymous

  • one year ago

If the radius of G is 10 and angle AGB = 72, calculate the area of the sector in G formed by the segments AG and GB.

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  1. anonymous
    • one year ago
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  2. anonymous
    • one year ago
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    give medal and fan if answered.

  3. anonymous
    • one year ago
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    help

  4. amistre64
    • one year ago
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    define 'sector'

  5. anonymous
    • one year ago
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    anything in GAEB

  6. amistre64
    • one year ago
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    does it include the triangle, or just the portion of the circle?

  7. anonymous
    • one year ago
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    the triangle

  8. amistre64
    • one year ago
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    i dont see enough information to determine the area of the triangle for those parts.

  9. amistre64
    • one year ago
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    hmm, might be tho ... lets draw it out maybe

  10. amistre64
    • one year ago
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    |dw:1440870557281:dw|

  11. amistre64
    • one year ago
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    i cant say that i see a way to determine the length of the base from this.

  12. amistre64
    • one year ago
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    or trig it

  13. anonymous
    • one year ago
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    oh

  14. anonymous
    • one year ago
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    is there any possible guess

  15. amistre64
    • one year ago
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    not for the triangle ... the terminology 'sector' implies the circle area to me tho

  16. anonymous
    • one year ago
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    oh

  17. anonymous
    • one year ago
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    well then what is the circle area

  18. anonymous
    • one year ago
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    ?

  19. amistre64
    • one year ago
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    you would need to find the formula in your material for the area of a circle ... then we can progress

  20. anonymous
    • one year ago
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    A=πr2

  21. anonymous
    • one year ago
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    for a circle

  22. amistre64
    • one year ago
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    and we know r right?

  23. anonymous
    • one year ago
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    A.20pi B.100pi C.2pi D.72pi the answer has to one of these

  24. amistre64
    • one year ago
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    ... we know r right? what does the r stand for?

  25. anonymous
    • one year ago
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    yah radius

  26. amistre64
    • one year ago
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    then our area of the full circle is? 10^2 pi but we only want 72 degrees of it .. not 360

  27. anonymous
    • one year ago
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    yah

  28. amistre64
    • one year ago
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    10^2/360 gives us the area of 1 degree, and 72 degrees is just 72 * 10^2/360

  29. amistre64
    • one year ago
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    being lazy and omitting the pi part of course

  30. anonymous
    • one year ago
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    of course

  31. anonymous
    • one year ago
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    so is it 100π

  32. amistre64
    • one year ago
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    100pi is the area of the whole circle ... we want 72 out of the 360 degrees that make up the whole

  33. amistre64
    • one year ago
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    what is 100/360?

  34. anonymous
    • one year ago
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    0.27

  35. amistre64
    • one year ago
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    and we want 72 of them ... what do we get when we add .277777... 72 times?

  36. amistre64
    • one year ago
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    72 * 100/360 9*8 * 10/36 8 * 10/4 2 * 10

  37. anonymous
    • one year ago
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    so its 20π

  38. amistre64
    • one year ago
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    thatll do it as long as sector is refering to the part of the circle

  39. anonymous
    • one year ago
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    okay thanks

  40. amistre64
    • one year ago
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    yw

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