what is the area of the trapezoid? I got 207yd2

Question

anonymous · Answer

jdoe0001 · Answer

http://0.tqn.com/d/math/1/0/4/G/trapezoidr.gif

mathmale · Answer

You are given two "lengths" for this trap.:  one is 8 yd., the other 19 yd.
Find their average:  (8+19)/2.
Multiply that by the height of the trap. (9 yd).
The resulting product is the answer you wanted.

anonymous · Answer

$$area=\frac{ \sum of \parallel sides }{ 2 }\times difference \between \parallel sides.$$

mathmale · Answer

The following formula tells us the same thing, symbolically:$$A _{trapezoid}=\frac{ L _{1}+L _{2} }{ 2 }*h$$   where h is the height of the trap. and L-sub-1 and L-sub-2 are the two different lengths.  Substitute the given values and find the Area.

whpalmer4 · Answer

The reason @mathmale's formula works is that it finds the area of the rectangle that would result if you straightened up the ends:

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