Answer:
275 square inches
Explanation:
Here we have to give us various measurements, but we do not know to which figure it corresponds since you do not attach it, but I have found an image where they asked the same questions and it makes sense that it is the question, the attached one.
We have that the rectangle is 15 inches long and the width corresponds to the same as the base of the triangle, that is, 5 inches, therefore, the area of the rectangle would be:
A = l * w
A = 15 * 5
A = 75
75 in ^ 2 but how are 3 rectangles would be:
75 * 3 = 225
225 in ^ 2 would be the area of the 3 rectangles, it would be necessary to add the area of the two triangles that would be:
A = b * h / 2
replacing:
A = 5 * 10/2
A = 25
25 in ^ 2 for the triangle, but being 2, they would be 50 ^ 2, now in total they would be:
225 + 50 = 275
In other words, the surface area of the figures is 275 square inches