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Alekssandra [29.7K]
3 years ago
15

S=_ft ?? Please also tell me how to do it

Mathematics
1 answer:
irina1246 [14]3 years ago
7 0

Answer:

70ft^2

Step-by-step explanation:

Surface area is the sum of all sides of the area. Since it is a rectangular prism, each surface area will be multiplied by two to account for the opposite side (ex. top and bottom are the same area).

The front/back area is 1*11 or 11. So the sum of the areas is 22.

The right/left area is 2*1 or 2. So the sum of the areas is 4.

The top/bottom area is 2*11 or 22. So the sum of the areas if 44.

We add these together to find the surface area.

22+4+44=70

The surface area is 70ft^2

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