if the base is 9 1/2in and the line in the middle is 3 1/2in. what is the area follow formula

What kind of figure is this?

it is an irregular figures like a trapezpoid and triangles

http://www.mathsisfun.com/area.html

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

Area = (base1 + base2) * height / 2

In this case, the base1 is given as 9 1/2 inches, and the base2 is also 9 1/2 inches since it is the same length. The height is given as 3 1/2 inches.

First, let's convert the mixed numbers to improper fractions:

9 1/2 inches = 19/2 inches
3 1/2 inches = 7/2 inches

Now, we can substitute these values into the formula:

Area = (19/2 + 19/2) * 7/2 / 2

Simplifying the equation:

Area = (38/2) * 7/2 / 2
Area = 19 * 7/2 / 2
Area = 133/4 / 2
Area = 133/8 or 16 5/8 square inches

So, the area of the trapezoid is 16 5/8 square inches.