The image is missing, so i have attached it.
Answer:
Total window area = 116.82 square inches
Explanation:
Looking at the attached image, the overall shape is that of a 10-inch square with four triangles attached to it .
Each of the triangles is an isosceles right triangle with leg lengths of 2.9 inches.
Since, we can see that one of these leg lengths is perpendicular, thus area of one triangle = ½ × 2.9 × 2.9
So,the area of the four triangles is;
total area of triangles = 4 × ½ × (2.9 × 2.9) = 16.82 in²
Now, the area of the 10-inch square is given by;
Area of square = 10 × 10 = 100 in²
Thus, the total window area will be sum of area of 4 triangles and area of square.
Total window area = 16.82 in² +100 in²
Total window area = 116.82 square inches