A trapezoid is a quadrangle in which only two sides are parallel and the sides are not equal.
Since the area of the trapezoid is equal to the product of the half-sum of its bases and the height S = (a + b) / 2 h, its height is equal to:
h = 2S / (a + b), where:
h – height;
S is the area of the trapezoid;
a, b – its bases;
h = 2 28/14 = 56/14 = 4 cm.
Answer: the height of the trapezoid is 4 cm.
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