anonymous
  • anonymous
line AC is the diameter. Calculate the area of the sector created by angle ADB 31.19 26.5 17.8 22.34
Mathematics
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
http://static.k12.com/eli/bb/817/-1/0/2_36869_44974/-1/5c45df68fdad740c9f94d22ea5f92dd60c7a03f7/media/58fba10fc1f1bfed4714b865f61e8c26ec99d679/mediaasset_651701_1.jpg
anonymous
  • anonymous
@jim_thompson5910
jim_thompson5910
  • jim_thompson5910
what is angle ADB equal to?

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More answers

anonymous
  • anonymous
idk its a third of the circle or 20 degrees ???
jim_thompson5910
  • jim_thompson5910
x = measure of angle ADB x+20 = 180 x = ???
anonymous
  • anonymous
160
jim_thompson5910
  • jim_thompson5910
yep we will use this later
jim_thompson5910
  • jim_thompson5910
what is the area of the entire circle?
anonymous
  • anonymous
idk
jim_thompson5910
  • jim_thompson5910
use the formula A = pi*r^2
jim_thompson5910
  • jim_thompson5910
pi = 3.14 approximately r = radius = half of the diameter
anonymous
  • anonymous
50.27
jim_thompson5910
  • jim_thompson5910
correct
jim_thompson5910
  • jim_thompson5910
now you multiply that by 160/360 to get the pie shaped sector formed by ADB
anonymous
  • anonymous
22.34?
jim_thompson5910
  • jim_thompson5910
and that is the approximate answer
anonymous
  • anonymous
thanks!!!
jim_thompson5910
  • jim_thompson5910
yw

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