A trapezoid has one pair of opposite parallel sides and one pair of opposite non-parallel sides. The pair of parallel sides has lengths 15 yd. and 19 yd. The non-parallel sides have lengths of 11 yd. and 8 yd. The distance between the parallel sides is 12 yd. What is the area of the trapezoid?

To find the area of a trapezoid, you can use the formula:

Area = 1/2 * (sum of the lengths of the parallel sides) * height

In this case, the sum of the lengths of the parallel sides is 15 yd + 19 yd = 34 yd. The given distance between the parallel sides is the height, which is 12 yd.

So, plugging these values into the formula:

Area = 1/2 * 34 yd * 12 yd
Area = 1/2 * 408 sq yd
Area = 204 sq yd

Therefore, the area of the trapezoid is 204 square yards.