Math Problem Statement

In a rectangle, one side is 108, and the diagonal is 117. Find the area of the rectangle.

Solution

The problem presents a right triangle with one side measuring 108 units and the diagonal (hypotenuse) measuring 117 units. We are asked to find the area of the right triangle.

Approach:

Let's denote the right triangle's vertices as:

  • AA and BB being the two perpendicular sides.
  • CC being the point where the hypotenuse ACAC meets the right angle at BB.

Given:

  • One side (leg) AB=108AB = 108
  • The diagonal (hypotenuse) AC=117AC = 117

We can use the Pythagorean Theorem to find the missing side BCBC. The Pythagorean theorem states:

AC2=AB2+BC2AC^2 = AB^2 + BC^2

Substitute the known values:

1172=1082+BC2117^2 = 108^2 + BC^2

Calculation:

1172=13689,1082=11664117^2 = 13689, \quad 108^2 = 11664

Now, solve for BCBC:

13689=11664+BC213689 = 11664 + BC^2 BC2=1368911664=2037BC^2 = 13689 - 11664 = 2037 BC=203745.16BC = \sqrt{2037} \approx 45.16

So, the length of side BCBC is approximately 45.16.

Area of the right triangle:

The area AA of a right triangle is given by:

A=12×base×heightA = \frac{1}{2} \times \text{base} \times \text{height}

Here, base = AB=108AB = 108 and height = BC45.16BC \approx 45.16.

A=12×108×45.16=2434.32A = \frac{1}{2} \times 108 \times 45.16 = 2434.32

Thus, the area of the triangle is approximately 2434.32 square units.

Let me know if you need further details or have any questions!


Here are 5 related questions to expand your understanding:

  1. How does the Pythagorean theorem help in calculating the unknown side of a right triangle?
  2. What would happen if the given triangle was not a right triangle? How would the area be calculated?
  3. How do you calculate the perimeter of a right triangle given all sides?
  4. What is the significance of the hypotenuse in a right triangle, and how does it relate to the other sides?
  5. How would you solve for the area of a rectangle if one side is given along with the diagonal?

Tip: When applying the Pythagorean theorem, always check if the given triangle is a right triangle first!

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Math Problem Analysis

Mathematical Concepts

Geometry
Right Triangles
Area Calculation

Formulas

Pythagorean theorem: a^2 + b^2 = c^2
Area of a rectangle: Area = length × width

Theorems

Pythagorean theorem

Suitable Grade Level

Grades 7-9