find the total surface area of a box 3 decimeters by 2 decimeters by 4 decimeters.

Question

shane_b · Answer

You can look at the dimensions given and see that it's a rectangular prism.  The surface formula for that object would be: $$\large  SA_{rect \space prism} = 2ab + 2bc + 2ac$$Where a, b and c are the lengths of the 3 sides.

anonymous · Answer

Since you are not required to respond with particular units, let's express the area as square decimeters.

From here, all you have to do is find the surface area by finding the area of each side, then adding them all together:

You have sides of dimensions:
 2x3, 2x4, and 3x4.

And you have two of each.

Find the area of each side:
2x3 = 6
2x4 = 8
3x4 = 12

Adding them all together, you get:
26 square decimeters.

Remembering that you have two of each side, you multiply this by two:

26 x 2 = 52 square decimeters

anonymous · Answer

l =3
w=2
h=4