Find the area of a trapezoid that has one base length measuring 18 mm, one base measuring 16 mm, and a height of 9 mm.
To find the area of a trapezoid, you can use the formula:
Area = (1/2) * (b1 + b2) * h
where b1 and b2 are the lengths of the bases and h is the height.
In this case, b1 = 18 mm, b2 = 16 mm, and h = 9 mm.
Area = (1/2) * (18 + 16) * 9
Area = (1/2) * 34 * 9
Area = 17 * 9
Area = 153 mm²
Therefore, the area of the trapezoid is 153 mm².