Find the area: to the nearest whole number

The area of the composite area is 400 square millimeters.

Step-by-step explanation:

The area of the composite figure (), in square millimeters, is found by multiplying the area of the equivalent rectangle, in which a semicircle of the original rectangle is move to the opposite side of the figure, so that quantity of area is conserved:

(1)

Where:

- Width, in millimeters.

- Height, in millimeters.

If we know that , the area of the composite figure is:

The area of the composite area is 400 square millimeters.

$452.90 because you needed to round to the nearest cent