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anonymous

  • one year ago

Find the area of a sector with a central angle of 216 degrees and a radius of 18.4 millimeters and round to the nearest tenth. Help please!

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  1. anonymous
    • one year ago
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    do u know formula \[A=\frac{ 1 }{ 2 } r ^{2} \theta \]

  2. anonymous
    • one year ago
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    No. I missed a day of class and that was the only day my teacher went over that and I have an assignment on it. :(

  3. anonymous
    • one year ago
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    dont use the formula i gave u its in radians

  4. anonymous
    • one year ago
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    Oh okay.

  5. anonymous
    • one year ago
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    area =\[\pi r ^{2} (\frac{ c }{ 360 })\]

  6. anonymous
    • one year ago
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    c is the central angle in ur case its 216

  7. anonymous
    • one year ago
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    \[\pi 18.4^{2} \times \frac{ 216 }{ 360 } =638.1705653 mm ^{2}\]

  8. anonymous
    • one year ago
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    got it?

  9. anonymous
    • one year ago
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    So that's the formula I should use?

  10. anonymous
    • one year ago
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    yes

  11. anonymous
    • one year ago
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    Awesome, thank you so much!

  12. anonymous
    • one year ago
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    \[area= \pi r ^{2}\times \frac{ c }{ 360 }\]

  13. anonymous
    • one year ago
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    no worries :)

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