Answer:
765 m squared
Explanation:
We need to find the area of all the sides of this 3D shape. We see that we have 3 rectangles and 2 triangles.
Rectangles:
We see that one rectangle (the leftmost one) has dimensions of 11 meters by 15 meters, so its area is 11 * 15 = 165 m squared.
The biggest rectangle is the one facing us, and its dimensions are 20 by 15, so the area is 20 * 15 = 300 m squared.
The last rectangle is on the bottom with dimensions of 15 m by 12 m, so the area is 15 * 12 = 180 m squared.
Adding these together, we get: 165 + 300 + 180 = 645 m squared.
Triangles:
These two triangles are actually congruent. Their base is 12 m, and their height is 10, so one triangle's area is 12 * 10 * (1/2) = 60. Since there are two, we multiply 60 by 2: 60 * 2 = 120 m squared.
Now, add the areas together: 645 + 120 = 765 m squared.
Hope this helps!