h = 6 cm.
a = h / 2.
b = 16 cm.
1. The area of a trapezoid S with bases a, b and height h is determined by the formula: S = (a + b) * h / 2.
2. Find the smaller base of the trapezoid a: a = h / 2.
a = 6 cm / 2 = 3 cm.
S = (3cm + 16cm) * 6cm / 2 = 57cm ^ 2.
Answer: the area of the trapezoid is S = 57 cm ^ 2.
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