<PRE><B>Question 66310</B>
A box is a rectangular Prism.
Here are the instructions and an example to find the surface area.
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Surface Area of Rectangular Prism
A rectangular prism has 2 ends and 4 sides. Opposite sides have the same area. The surface area is the sum of the areas of all six sides.

How to find the surface area of Rectangular Prisms:

Find the area of two sides (Length*Height)*2 sides 
Find the area of adjacent sides (Width*Height)*2 sides 
Find the area of ends (Length*Width)*2 ends 
Add the three areas together to find the surface area 
Example: The surface area of a rectangular prism 5 cm long, 3 cm. wide and 2 cm. high = 5*2*2 + 3*2*2 + 5*3*2 = 20 + 12 + 30 = 62 cm2. 
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Hope this helps.
Cheers,
Stan H.
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