Answer: 19 inches
Explanation:
The shape is a trapezium. (You can tell as there is one pair of parallel sides.) Therefore, to find the area, the following formula is needed:
Area of a trapezium =
a and b represent the parallel sides
Next, plug in the given values:
Rearrange the equation to get x on its own:
Therefore, the answer is 19 inches. Remember your units!