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2 years ago

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

Mathematics

1 answer:

OlgaM077 [116]2 years ago

5 0

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

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