Math Problem Statement

Find the area of the figure.

Solution

To solve for the area of this figure, we can break it down into simpler geometric shapes: a rectangle and a triangle.

  1. The Rectangle:

    • The base is 48 m, and the height is 10 m.
    • The area of a rectangle is given by: Area of rectangle=base×height\text{Area of rectangle} = \text{base} \times \text{height} =48m×10m=480m2= 48 \, \text{m} \times 10 \, \text{m} = 480 \, \text{m}^2
  2. The Triangle:

    • The base of the triangle is 48 m (the same as the rectangle's base), but this triangle is composed of two smaller right triangles. Each smaller right triangle has:

      • Base of 25 m.
      • Height of 17 m - 10 m = 7 m (this is because the total height from the base to the top is 17 m, and we subtract the 10 m height of the rectangle part).
    • The area of one right triangle is: Area of one triangle=12×base×height\text{Area of one triangle} = \frac{1}{2} \times \text{base} \times \text{height} =12×25m×7m=87.5m2= \frac{1}{2} \times 25 \, \text{m} \times 7 \, \text{m} = 87.5 \, \text{m}^2

    • Since there are two such triangles: Total area of triangles=2×87.5m2=175m2\text{Total area of triangles} = 2 \times 87.5 \, \text{m}^2 = 175 \, \text{m}^2

  3. Total Area:

    • Adding the areas of the rectangle and the triangles: Total Area=480m2+175m2=655m2\text{Total Area} = 480 \, \text{m}^2 + 175 \, \text{m}^2 = 655 \, \text{m}^2

Thus, the area of the figure is 655 square meters.

Would you like more details or have any questions about this? Here are some related questions you might find helpful:

  1. How do you calculate the area of irregular shapes?
  2. What is the formula for the area of a right triangle?
  3. How do you decompose complex figures into simpler shapes?
  4. Why is the height of the triangle calculated as 17m10m17 \, \text{m} - 10 \, \text{m}?
  5. What other methods can be used to find the area of composite figures?

Tip: When solving geometry problems, always look for ways to break complex shapes into simpler, well-known geometric figures like rectangles and triangles.

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Math Problem Analysis

Mathematical Concepts

Geometry
Area of composite figures
Triangles
Rectangles

Formulas

Area of rectangle = base × height
Area of triangle = 1/2 × base × height

Theorems

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Suitable Grade Level

Grades 6-8