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la Group Title

Can u help me with the Extra Credit i tried but still cant get it -___- http://instagram.com/p/TBa3HrmH9y/

  • one year ago
  • one year ago

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  1. chaguanas Group Title
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    It has something to do with common sides and common angles.

    • one year ago
  2. malevolence19 Group Title
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    You have enough info to solve for all the quantities for a single triangle. Find its area. Multiply by 4. Done.

    • one year ago
  3. la Group Title
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    thats the problem i dont know how to work it out lol

    • one year ago
  4. malevolence19 Group Title
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    Okay do you know trig?

    • one year ago
  5. la Group Title
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    yes

    • one year ago
  6. cherio12 Group Title
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    You can just do the area of a circle divided by 6, times two

    • one year ago
  7. la Group Title
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    i dont know the area though

    • one year ago
  8. cherio12 Group Title
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    but you know radius, so you can find area

    • one year ago
  9. malevolence19 Group Title
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    You can find the ratio of the shaded to unshaded. So we have: 240 degrees of the thing is UNSHADED right? So this means that 120 degrees IS shaded. This means that 120/360=1/3. So the shaded region is 1/3 of the total region. So we need the area of the total region. We have a radius of 2 cm. This gives: 4 pi cm^2 for the TOTAL area, Multiply by 1/3 to get the area of the shaded region. so: 4/3 pi cm^2. :)

    • one year ago
  10. malevolence19 Group Title
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    240=180+60;

    • one year ago
  11. la Group Title
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    so the answer is 4/3 pi cm^2 ?

    • one year ago
  12. malevolence19 Group Title
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    My first response I was looking at the problem above it. I mean, it says nearest hundreth so you might wanna calculator it a bit but that's the **Exact** answer.

    • one year ago
  13. cherio12 Group Title
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    Area of circle= pi(2^2)=4pi/6*2=4/3 pi

    • one year ago
  14. la Group Title
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    so type 4/3 pi cm^2 in the calculator and get the nearest hundredth?

    • one year ago
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