Use a ruler, to find out the area do width times length.
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You find the height, length and the width and you multiple them together then you will get the answer.
First find the height, width and length of the box, next times these number together and you will get the answer.
First of all, there's probably no other way to find it except with math.-- Add up:(length of the box times width of the box) plus(length of the box times height of the box) plus(width of the box times height of the box).-- Double the result.-- You have the total area of the cardboard used to make the box, including its top.
Subtract the square of the width from the diameter. The square root of that is the length.
length x width x height easy