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anonymous

  • one year ago

Find the combined area of the triangles. Click on the answer until the correct answer is showing.

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  1. anonymous
    • one year ago
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    |dw:1438287563603:dw|

  2. anonymous
    • one year ago
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    plz help

  3. welshfella
    • one year ago
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    what is the length of each leg of the triangles equal to ? - its some property of the circle.

  4. anonymous
    • one year ago
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    4

  5. welshfella
    • one year ago
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    ???? there are no values given in the question

  6. anonymous
    • one year ago
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    the diameter would be 8

  7. anonymous
    • one year ago
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    the triangles are right triangles

  8. welshfella
    • one year ago
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    can you please submit the whole question

  9. welshfella
    • one year ago
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    yes they are right angles and the length of each leg = radius of the circle

  10. jim_thompson5910
    • one year ago
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    Each triangle looks like this |dw:1438288256480:dw|

  11. anonymous
    • one year ago
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    the options are: A=27pi A=4pi-8 A=6/3pi A=16 A=9pi-9/2 √3

  12. jim_thompson5910
    • one year ago
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    Area of triangle A = (b*h)/2 b = base h = height

  13. anonymous
    • one year ago
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    so 4x4 = 16?

  14. jim_thompson5910
    • one year ago
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    cut that in half to get 8

  15. jim_thompson5910
    • one year ago
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    each triangle has an area of 8

  16. anonymous
    • one year ago
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    But wouldn't that still be 16 because I'm finding the area of the COMBINED triangle?

  17. jim_thompson5910
    • one year ago
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    yes you add up 8 and 8 to get 16

  18. jim_thompson5910
    • one year ago
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    you can think of it as combining the two triangles to form a rectangle |dw:1438288668943:dw|

  19. anonymous
    • one year ago
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    So the answer is 16?

  20. anonymous
    • one year ago
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    I have another question...

  21. anonymous
    • one year ago
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    Find the area of the shaded sections. Click on the answer until the correct answer is showing.

  22. jim_thompson5910
    • one year ago
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    yeah the answer is 16

  23. anonymous
    • one year ago
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    |dw:1438288773246:dw|

  24. anonymous
    • one year ago
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    I don't think I'll ever understand this...

  25. jim_thompson5910
    • one year ago
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    |dw:1438289099785:dw| 120+x = 180 what is x ?

  26. anonymous
    • one year ago
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    x = 60?

  27. jim_thompson5910
    • one year ago
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    yes

  28. jim_thompson5910
    • one year ago
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    what is the area of the entire circle?

  29. anonymous
    • one year ago
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    360

  30. jim_thompson5910
    • one year ago
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    use the formula A = pi*r^2

  31. jim_thompson5910
    • one year ago
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    in this case, r = 4

  32. anonymous
    • one year ago
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    A= 3.14 x 16 = 54.4?

  33. jim_thompson5910
    • one year ago
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    let's leave that in terms of pi

  34. jim_thompson5910
    • one year ago
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    area of entire circle = 16pi

  35. jim_thompson5910
    • one year ago
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    the angle 60 is 60/360 = 1/6 of the circle so the area of the pizza slice I shaded is 1/6 of the entire area |dw:1438290027136:dw|

  36. jim_thompson5910
    • one year ago
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    area of 1 pizza slice = (1/6)*(entire area) area of 1 pizza slice = (1/6)*(16pi) area of 1 pizza slice = (8/3)*pi

  37. jim_thompson5910
    • one year ago
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    make sense?

  38. anonymous
    • one year ago
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    not really...but you can move on to the next part...

  39. jim_thompson5910
    • one year ago
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    well 1 slice is (8/3)*pi, so 2 slices combine to 2*(8/3)*pi = (16/3)pi

  40. anonymous
    • one year ago
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    okay

  41. jim_thompson5910
    • one year ago
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    |dw:1438290120997:dw|

  42. anonymous
    • one year ago
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    OH! I get it! THANKKK YOUU!!!

  43. jim_thompson5910
    • one year ago
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    np

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