# Find the Surface Area box (5ft)(5ft)(5ft) h=5ftl=5ftw=5ft
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=5, the width w=5, and the height h=5 into the formula.
2⋅5⋅5+2⋅5⋅5+2⋅5⋅5
Simplify each term.
Multiply 2 by 5.
10⋅5+2⋅5⋅5+2⋅5⋅5
Multiply 10 by 5.
50+2⋅5⋅5+2⋅5⋅5
Multiply 2 by 5.
50+10⋅5+2⋅5⋅5
Multiply 10 by 5.
50+50+2⋅5⋅5
Multiply 2 by 5.
50+50+10⋅5
Multiply 10 by 5.
50+50+50
50+50+50
Simplify by adding numbers.
Add 50 and 50.
100+50
Add 100 and 50.
150
150(ft)2
Find the Surface Area box (5ft)(5ft)(5ft)

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