find area of the trapezoid. leave it in simplest radical form.
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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! :)
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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? :)
39/2 rad 3 ft^2
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