anonymous
  • anonymous
find area of the trapezoid. leave it in simplest radical form.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
|dw:1371431096860:dw|
anonymous
  • anonymous
Hi :) To solve your question, since there are no diagrams provided, simply take a look at this website: http://www.mathgoodies.com/lessons/vol1/area_trapezoid.html So since we know that the area of a trapezoid is actually A = 0.5(b1 + b2)*h, where b1 and b2 are the bases, we substitute these numbers in to get our answer. Hope this helped, have a nice day! :)
anonymous
  • anonymous
I provived a daigram

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anonymous
  • anonymous
*diagram
anonymous
  • anonymous
Alright so by trigonometry we find that the height is actually sin 60 degrees = opp / hypotenuse. So the opposite side, which in this case is the height, is actually 1.73, if you punch that in the calculator :) Now what we do is by Pythagorus' theorem, we get that the adjacent side respective to angle 60 degrees is 1, which is a really nice number since 1.73 squared is 3 :) So now we know b1 is actually 19ft, and b2, as stated, is 20 ft. Now we substitute the numbers into our previous equation. What do we get? :)
anonymous
  • anonymous
39/2 rad 3 ft^2
anonymous
  • anonymous
Slow down there! Radical form means in terms of roots, right? So we know that 1.73 is root 3. Thus we multiply it. So we get A = (20 +19)(0.5)(root 3). So what do we get when we simplify this? :) @mjlowder1

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