Math Problem Statement

What is the length of the hypotenuse in a right triangle with legs of 8 ft and 9 ft?

Solution

This is a right triangle with one leg measuring 8 ft, the other leg measuring 9 ft, and the hypotenuse labeled as xx. To find the hypotenuse xx, we use the Pythagorean theorem:

a2+b2=c2a^2 + b^2 = c^2

Where:

  • a=8a = 8 ft,
  • b=9b = 9 ft,
  • c=xc = x (the hypotenuse).

Substituting the values:

82+92=x28^2 + 9^2 = x^2

64+81=x264 + 81 = x^2

145=x2145 = x^2

Taking the square root of both sides:

x=145x = \sqrt{145}

Approximating 145\sqrt{145}:

x12.04ft.x \approx 12.04 \, \text{ft}.

Final Answer:

The hypotenuse xx is approximately 12.04 ft.

Let me know if you want further details or a breakdown! Here are some related questions to explore:

  1. How is the Pythagorean theorem used in different real-life applications?
  2. What are the other trigonometric methods to solve a right triangle if angles are known?
  3. How can we use a calculator to approximate square roots like 145\sqrt{145}?
  4. What is the geometric significance of the hypotenuse in a triangle?
  5. Can the same formula be applied in non-right triangles?

Tip: Always check your triangle for a right angle before applying the Pythagorean theorem!

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Math Problem Analysis

Mathematical Concepts

Geometry
Pythagorean Theorem
Square Roots

Formulas

a^2 + b^2 = c^2
√(x) for square root approximation

Theorems

Pythagorean Theorem

Suitable Grade Level

Grades 6-8