A trapezoid is a quadrilateral with one set of parallel sides. The area of a trapezoid is one-half the sum of the lengths of the parallel sides multiplied by the height. In this diagram, that becomes ½(b + d)(h).

The dimensions of this trapezoid are a = 4, b = 3, c = 6, d = 8, and h = 2. What is the area?

10 | |

11 | |

10\(\frac{1}{2}\) | |

18 |