Question

I need help! It's all in the picture, please show work and no violating rules of Brainly!

Answer 1

Answer:

860cm²

Step-by-step explanation:

1. area of the side triangle:

(15×8)×2= 120×2= 240cm²

there's two side triangles with the same length and width, so just multiply by two.

2. area of the square on top:

20×8= 160cm²

3. area of the rectangle behind:

20×8= 160cm²

4. area of the square below:

20×15= 300cm²

5. the total of all areas (surface area):

240+160+160+300= 860cm²