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lana.831

  • 3 years ago

The length of arc AB = 9π and m∠AOB = 150°. What is the length of the radius of the circle?

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  1. lana.831
    • 3 years ago
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  2. lana.831
    • 3 years ago
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    @RadEn can you help me, please?

  3. RadEn
    • 3 years ago
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    use the proportion : 150/360 = arc AB/circumference circle 150/360 = 9π/2πr 5/12 = 9/2r solve for r

  4. HAPPY10
    • 3 years ago
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    9? = 2?r(150/360) r = 10.8 unites 2? = (1/2)(x)3^2, where x is the measure of ?COD in rad. x = 4?/9 rad = 80 degrees im for sure

  5. lana.831
    • 3 years ago
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    |dw:1365446535715:dw|

  6. lana.831
    • 3 years ago
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    @RadEn is that right?

  7. RadEn
    • 3 years ago
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    correct!

  8. HAPPY10
    • 3 years ago
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    yes mam

  9. robtobey
    • 3 years ago
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    Solve the following for r, the radius.\[\pi 2 r=\frac{360\ 9 \pi }{150} \]r = 10.8

  10. lana.831
    • 3 years ago
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    thank you!

  11. HAPPY10
    • 3 years ago
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    np

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