During a​ hurricane, thousands of pine trees snapped off to form right triangles. Suppose that for one such​ tree, the vertical distance from the base of the broken tree to the point of the break was 4.1 ft. The length of the broken part was 11.1 ft. How far along the ground was it from the base of the tree to the point where the broken part touched the​ ground?

1 answer

To find the horizontal distance from the base of the tree to the point where the broken part touches the ground, we can model the situation as a right triangle. In this right triangle:

  • The vertical side (the height from the base of the tree to the point of the break) is 4.1 ft.
  • The hypotenuse (the length of the broken part of the tree) is 11.1 ft.
  • We need to find the horizontal side, which we'll call \( x \) (the distance from the base of the tree to where the broken part touches the ground).

According to the Pythagorean theorem, which states that for a right triangle:

\[ a^2 + b^2 = c^2 \]

where \( c \) is the hypotenuse, and \( a \) and \( b \) are the other two sides, we can replace \( a \), \( b \), and \( c \) with our known values:

  • Let \( a = 4.1 \) ft (vertical distance).
  • Let \( c = 11.1 \) ft (hypotenuse).
  • Let \( b = x \) (horizontal distance).

Thus, our equation becomes:

\[ (4.1)^2 + x^2 = (11.1)^2 \]

Calculating the squares:

\[ 16.81 + x^2 = 123.21 \]

Now, solve for \( x^2 \):

\[ x^2 = 123.21 - 16.81 \] \[ x^2 = 106.4 \]

Next, take the square root of both sides to find \( x \):

\[ x = \sqrt{106.4} \approx 10.32 \text{ ft} \]

Therefore, the horizontal distance from the base of the tree to the point where the broken part touches the ground is approximately 10.32 ft.