Answer
$750\ m^2$
Work Step by Step
To find the total area, sum the areas of each of the rectangles that form the figure.
The rectangle on top is 40 m x 10 m.
$A=40\ m\times10\ m=400\ m^2$
The rectangle in the middle is 15 m x 10 m. (Subtract to find the width. $40-25=15$.)
$A=15\ m\times10\ m=150\ m^2$
The rectangle on the bottom is 20 m x 10 m.
$A=20\ m\times10\ m=200\ m^2$
Sum to find the total area.
$400\ m^2+150\ m^2+200\ m^2=750\ m^2$
