A new park is being built in the shape of a trapezoid, as show in the diagram below.

The builders will cover the ground with a solid rubber surface to ensure the children playing have a safe and soft place to land when they jump or fall.
How many square yards of rubber will be needed for this park?
10 yards
6.4 yards
12.5 yards
20 yards
Here is an example of how to solve for area of a trapezoid.

The area of a trapezoid can be calculated using the formula A = 1/2 * (b1 + b2) * h, where b1 and b2 are the lengths of the two parallel sides of the trapezoid and h is the height.

In this case, let's assume the lengths of the parallel sides are 5 yards and 7 yards, and the height is 3 yards.

So, the area of the trapezoid would be A = 1/2 * (5 + 7) * 3 = 1/2 * 12 * 3 = 18 square yards.

Therefore, the builders will need 18 square yards of rubber to cover the trapezoid-shaped park. None of the given options match this answer, so it seems like there was a mistake in providing the options.