Answer:
C. 225m^2
Explanation:
Let's find the area of the shaded region. There are 5 whole squares shaded. There are 8 half squares shaded. (Each pair of triangles makes a whole square.) We have 4 more whole squares.
There are a total of 9 whole squares shaded.
The length of the side of the entire shape is 25m. The entire shape is divided into 25 squares. 25/5 = 5.
Each small square has an area:
A_smallsquare
= 5×5
= 25m^2
A_shaded
= 25 × 9
= 225m^2