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anonymous

  • 5 years ago

find the area of each sector to the nearest tenth. 225 degree & 8cm

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  1. anonymous
    • 5 years ago
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    Is the 8cm the radius? If so then the area of the whole circle is 64 so multiply that by the amount you are interested in (225/360): 64(225/360) = 40.0 square cm.

  2. anonymous
    • 5 years ago
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    how did you get 64

  3. anonymous
    • 5 years ago
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    I did forget to π there, sorry. I meant 64π so the answer is 40π. I got the 64π because the area of a circle is πr^2 where r is the radius of the circle.

  4. anonymous
    • 5 years ago
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    fnd the missing side lenghts. leave your answer as radicals in the simpliest form. it is a 30, 60, 90 triangle with the base of 3

  5. anonymous
    • 5 years ago
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    Which side are you considering the base? If it's the side between the 60 and the 90 degree sides then the other sides are 6 and 3√3

  6. anonymous
    • 5 years ago
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    it's the side between the 30 and 60

  7. anonymous
    • 5 years ago
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    then in that case the other sides are 3/2 and (3√3)/2

  8. anonymous
    • 5 years ago
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    find the measure of the arc or central angle indicated. assume that lines which appear to be diameters are actual diameters.

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