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Given:
Bases of the trapezoid are 5.2 m and 14.6 m.
The height of the trapezoid is 7 m.
To find:
The area of the trapezoid.
Solution:
The area of a trapezoid is:
Where, a,b are bases and h is the height of the trapezoid.
Putting in the above formula, we get
Therefore, the area of the trapezoid is 69.3 square meters.
It looks like
(If the limits are in the wrong order, just multiply the result by -1)
Split the integral at an arbitrary value between
and 
, and write 
as
Then by the FTC,
(If the limits are in the wrong order, just multiply the result by -1)
Split the integral at an arbitrary value between
Then by the FTC,