square units of measurement
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Add up all the sides of the rectangle.
The formula for finding the perimiter of a rectangle is add up all of its sides
Rectangle area = (rectangle width) x (rectangle height)
To find the area of an arrow you can first divide it into two shapes, a rectangle and triangle. First find the area of the rectangle then the area of the triangle. Then when you find both areas of the two shapes add them up to get the area of the arrow. If you don't know how to find the area of those two shapes you are so far lost.
A = lw Area of a rectangle = length times width