How many sheets of paper can be produced from a single tree?
It is probably hard to get an exact number, but here is how I would start answer to this question: First, we have to define what a “tree” is. Is it a giant redwood tree or a little weeping willow? Most paper is made from pine trees, so I went out in the woods and looked at some pines. Most are about 1 foot in diameter and 60 feet tall. Ignoring taper, that’s about 81,430 cubic inches of wood: pi * radius2 * length = volume 3.14 * 62 * (60 * 12) = 81,430 I have a 2×4-foot piece of lumber in the backyard. It weighs about 10 pounds and contains 504 cubic inches of wood. That means a pine tree weighs roughly 1,610 pounds (81430/504 * 10). I know that in manufacturing paper, the wood is turned into pulp. The yield is about 50 percent — about half of the tree is knots, lignin and other stuff that is no good for paper. So that means a pine tree yields about 805 pounds of paper. I have a ream of paper for a photocopier here and it weighs about 5 pounds and contai
