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for our instructable we are making the doritos bag smaller so that we use less plastic

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without popping the 1st bag form the doritos bag into a rectangular prism get the ruler and measure the bag sides (height, length and width)

to find the volume you have to take the measurements and plug them into this equations (length*width*height)

to measure the surface area you have to open the first bag and dump the doritos out now you open the bottom it should now kinda look like a tube and now cut on one of the long sides so when you flatten it out it is a rectangle measure the sides with the ruler

to find the surface area use the measurements and plug them into this equation (length*height)

get the second bag and cut the bag short ways so that there is about a centimeter now you have to get the stapeler and staple the bag a few times so it is closed

And you'll have . . .

A "Walking Taco!"

Anyway, good try.

_{(There's a similar project for Cheerios - I'm guessing they are tasks set by the same teacher.)}