# Find the Surface Area box (4)(4)(8) h=4l=4w=8
The surface area of a box is equal to the sum of the areas of each side of the box.
2⋅(length)⋅(width)+2⋅(length)⋅(height)+2⋅(width)⋅(height)
Substitute the values of the length l=4, the width w=8, and the height h=4 into the formula.
2⋅4⋅8+2⋅4⋅4+2⋅8⋅4
Simplify each term.
Multiply 2 by 4.
8⋅8+2⋅4⋅4+2⋅8⋅4
Multiply 8 by 8.
64+2⋅4⋅4+2⋅8⋅4
Multiply 2 by 4.
64+8⋅4+2⋅8⋅4
Multiply 8 by 4.
64+32+2⋅8⋅4
Multiply 2 by 8.
64+32+16⋅4
Multiply 16 by 4.
64+32+64
64+32+64
Simplify by adding numbers.
Add 64 and 32.
96+64
Add 96 and 64.
160
160
Find the Surface Area box (4)(4)(8)

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