Need on this math question

It is 8.5 unit squared

Step-by-step explanation:

so first you can make a  rectangle that is bigger than the shape.

So you find the area of the rectangle.

5 unit x 3 unit = 15 unit.

Then you subtract the spaces that you don't need to find the area of.

1 x 1 x 1/2 = 0.5  The small triangle on the top left corner of the shape

4 x 3 x 1/2 = 6  The triangle on the bottom right of the shape.

Then you add them and then subtract it from the total area.

15 - 6.5 = 8.5

The area of this shape is 8.5 unit squared

no not all of them.

step-by-step explanation:

some of them have a square base.