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2 x (3 x 3) + 4 x (3 x 4) = 2 x (9) + 4 x (12) = 18 + 48 = 66 square feet

==> IF the box is sealed, i.e. the top is closed, so there are six sides to it.

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Q: What is the surface area of a 3Ft by 3Ft by 4Ft box?
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What is the surface of a box that is 3ft by 4ft by 5ft?

Surface area = 2*(3*4 + 4*5 + 5*3) = 2*(12 + 20 + 15) = 2*47 = 94 sq ft.


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need to measure the length and width of the front surface, then multiply these two measurements together. This will give you the area of the front surface of the box.


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To calculate the area of the front surface of a box, you would multiply the width of the box by the height of the box. This calculation gives you the area of the rectangular front surface.


What is the difference between the area of each face on a box added up and the surface area of a box?

The surface area of a box is the sum of the areas of the individual faces. If that's what you said, then there is no difference.


Are area and surface area the same?

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