Question

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Answer 1

`360\ cm^2`

Explanation:

Step 1: Determine the area of the bottom rectangle

`A = l * w`

`A = 10\ cm * 12\ cm`

`A = 120\ cm^2`

Step 2: Determine the area of the back rectangle

`A = l * w`

`A = 10\ cm * 5\ cm`

`A = 50\ cm^2`

Step 3: Determine the area of the top rectangle

`A = l * w`

`A = 10\ cm * 13\ cm`

`A = 130\ cm^2`

Step 4: Determine the area of the triangle

`A = (h*b)/(2)`

`A = (5\ cm * 12\ cm)/(2)`

`A = (60\ cm^2)/(2)`

`A = 30\ cm^2`

Step 5: Determine the surface area

`120\ cm^2 + 50\ cm^2 + 130\ cm^2 + 2(30\ cm^2)`

`360\ cm^2`

Answer:
`360\ cm^2`