If I drive a nail into the bark of an oak tree exactly 3 fee

If I drive a nail into the bark of an oak tree exactly 3 feet above the ground, how much time must pass before the nail is raised to a height of 6 feet? The following information may be helpful in answering the question: 6 months growing season, 12 hours per day of sunlight, average growth rate of 6 inches per year.

Solution

Question: If I drive a nail into the bark of an oak tree exactly 3 feet above the ground, how much time must pass before the nail is raised to a height of 6 feet?

Answer: The tree takes 6 years to raise from 3feet to 6 feet. To raise from 3feet to 6 feet, it takes extra 3 feet. We know that 3 ft = 36 Inches. It is given that the average growth rate is 6 inches per year. So to raise to a height of 36 In, it takes 36/6 = 6 years. If we drive a nail into the bark of a tree, even after years the nail would still be the same distance from the ground, it will not move from that position. The new wood will grow around the nail, probably completely embedded into the tree. Trees grow taller from the ends of their twigs, not from their trunks.